Fang Zhang | Tufts University (original) (raw)
Papers by Fang Zhang
Journal of Phycology, 2010
The feasibility of utilizing discrete excitation-emission spectra (DEEMs) to identify dominant gr... more The feasibility of utilizing discrete excitation-emission spectra (DEEMs) to identify dominant groups of phytoplankton at both the genus and division levels was investigated. First, the characteristics of in vivo DEEMs were extracted using Coif2 wavelet. Second, optimal characteristic spectra of scale vectors (SOCS) and time-series vectors (TOCS) were selected by Fisher linear discriminant analysis (FLDA). Third, the SOCS and TOCS were sorted using hierarchical cluster analysis (HCA), and a tworank database was established according to their discrimination ability. Fourth, the discrimination of phytoplankton was established by nonnegative least squares (NNLS). For single-species samples, the correct identification ratios (CIRs) were 62.9%-100% at the genus level and 95.1%-100% at the division level. The dominant species in the mixtures had corresponding CIRs of 87.5% and 97.9%, and 23 dominant species were correctly identified. Prorocentrum donghaiense D. Lu, Thalassiosira nordenskioeldi Cleve, Chaetoceros socialis Lauder (bloom-forming species with a density of about 10 7 cellAEL )1 ), and Skeletonema costatum (Grev.) Cleve (a dominant species with a density of 10 4 -10 6 cellAEL )1 in seawater) were identified at the genus level. Other dominant species in seawater were identified at the division level if their density was 10 5 -10 6 cellAEL )1 .
Journal of Experimental Marine Biology and Ecology, 2009
An in vivo 3D fluorescence discrimination technique for ten harmful algal bloom (HAB) species tha... more An in vivo 3D fluorescence discrimination technique for ten harmful algal bloom (HAB) species that belong to eight genera of four divisions was developed by wavelet analysis. Daubechies-7 (db7) was employed as the mother wavelet. The fifth scale domains were selected as the discriminant characteristic spectra (DCS). Based on the DCS, The phytoplankton species at different growth stages were classified
Burns, 2015
This article reports a chemical burn incident that occurred on 31 August 2013 in Shanghai. We des... more This article reports a chemical burn incident that occurred on 31 August 2013 in Shanghai. We describe situations at the scene, emergency management, triage, evacuation, and follow-up of the victims. The scene of the incident and information on the 41 victims of this industrial chemical incident were investigated. The emergency management, triage, evacuation, and hospitalization data of the patients were summarized. At the time of the incident, 58 employees were working in a closed refrigerator workshop, 41 of whom sustained burns following the leakage of anhydrous ammonia. Ten victims died of severe inhalation injury at the scene, and another five victims died during the process of evacuation to the nearest hospital. After receiving information on the incident, a contingency plan for the burn disaster was launched immediately, and a first-aid group and an emergency and triage group were dispatched by the Changhai Hospital to the scene to aid the medical organization, emergency management, triage, and evacuation. All casualties were first rushed to the nearest hospital by ambulance. The six most serious patients with inhalation injuries were evacuated to the Changhai Hospital and admitted to the burn intensive care unit (BICU) for further treatment, one of whom died of respiratory failure and pulmonary infection. This mass casualty incident of anhydrous ammonia leakage caused potential devastating effects to the society, especially to the victims and their families. Early first-aid organization, emergency management, triage, and evacuation were of paramount importance, especially rapid evaluation of the severity of inhalation injury, and subsequent corresponding medical treatment. The prognosis of ammonia burns was poor and the sequelae were severe. Management and treatment lessons were drawn from this mass casualty chemical burn incident.
slow metabolizing groups, respectively: ADH3 1-2 (OR ¼ 1.5, 95% CI 0.9-2.4) and ADH3 2-2 (OR ¼ 1.... more slow metabolizing groups, respectively: ADH3 1-2 (OR ¼ 1.5, 95% CI 0.9-2.4) and ADH3 2-2 (OR ¼ 1.3, 95% CI 0.5-3.5). Fast metabolizers who drank 15-30 g/day of alcohol had 2.3 times (95% CI 1.3-4.0) greater risk of breast cancer than non-drinkers who were intermediate or slow metabolizers. This association for fast metabolizers who drank 15-30 g/day was particularly pronounced
Pregnancy conditions accompanied by high blood pressure, such as preeclampsia and pregnancy-relat... more Pregnancy conditions accompanied by high blood pressure, such as preeclampsia and pregnancy-related hypertension, have been associated with a lower risk of breast cancer in several epidemiologic studies. It is unknown whether length of gestation or multiple occurrence of these conditions alters the association with breast cancer. It is also unknown whether the inverse association between preeclampsia and breast cancer risk
J. Mater. Chem. A, 2014
ABSTRACT A new strategy of bonding organometallics to an MCM-41 thin layer coated onto Fe3O4 micr... more ABSTRACT A new strategy of bonding organometallics to an MCM-41 thin layer coated onto Fe3O4 microspheres with strong magnetism, denoted as M–PPh2-MCM-41@SiO2@Fe3O4, where M = Pd(II) and Rh(I), has been developed for the immobilization of homogeneous catalysts. In comparison with the traditional M–PPh2-MCM-41 catalysts with irregular shapes and the M–PPh2-SiO2@Fe3O4 without an ordered mesoporous structure, the current catalysts exhibited much higher activities for various water-based Suzuki, Sonogashira and Miyaura–Michael organic reactions, due to the high dispersion of active sites and the uniform catalyst particles with short-ordered mesopores favoring reactant diffusion and adsorption. Their catalytic efficiencies are comparable with those of the homogeneous catalysts, and they could be easily recycled for reuse by simply applying an external magnet.
ACS Catalysis, 2014
ABSTRACT The amine-functionalized graphene oxide was prepared by a facile one-step silylation app... more ABSTRACT The amine-functionalized graphene oxide was prepared by a facile one-step silylation approach and used as an acid–base bifunctional catalyst in one-pot cascade reactions containing successive acetal hydrolysis and Knoevenagel condensation owing to the separate coexistence of original carboxylic acid on the edge of the GO sheet and the postgrafted amine groups on the GO basal surface. This catalyst exhibited much higher activity than either amine-functionalized active carbon, amine-functionalized SBA-15, or amine-functionalized Al2O3 due to the enriched surface acid sites and the diminished diffusion limitation as well as high catalyst dispersion in liquid solution due to the unique two-dimensional structure. More importantly, this catalyst could be easily recycled and used repetitively, showing potential application in industry.
The recrystallization texture in grain oriented silicon steel sheets, which were annealed at diff... more The recrystallization texture in grain oriented silicon steel sheets, which were annealed at different primary annealing temperatures with and without an electric field, was investigated. An automated electron backscattered diffraction (EBSD) technique was used to analyze the recrystallization texture. It was found that recovery and application of electric field in primary annealing lead to an increase of {001} component and a decrease of {111} component after annealing at 900 • C. The development of recrystallization texture can be explained in terms of the effects of electric field and primary annealing temperature on recovery.
Chemical Science
Water-medium organic synthesis on reusable heterogeneous organometal catalysts represents an impo... more Water-medium organic synthesis on reusable heterogeneous organometal catalysts represents an important trend in green chemistry owing to the absence of pollution from both toxic organic solvents as reaction media and heavy metal ions leached from the catalysts. However, heterogeneous organometal catalysts usually display lower activities than their corresponding homogeneous ones due to the decreased dispersion and unmatched microenvironment of the active sites, together with enhanced diffusion limitation. Great efforts have been made to develop active heterogeneous organometal catalysts by adjusting the composition, engineering the surface chemistry, and tailoring the morphology and pore structure. In this minireview, we summarize recent progress in designing heterogeneous organometal catalysts with high efficiency and strong durability in various water-medium organic reactions and discuss their structure–performance relationships. This might be beneficial for the development of bot...
ChemInform
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ACS Sustainable Chemistry & Engineering
Phenyl-bridged periodic mesoporous organosilica modified with sodium benzenesulfonate groups (NaS... more Phenyl-bridged periodic mesoporous organosilica modified with sodium benzenesulfonate groups (NaSO3Ph-PMO) was frabicated by template-assembled co-condensation and subsequent ion-exchange processes. This functionalized support efficiently anchored scandium triflate to generate a mesoporous Lewis acid catalyst (Sc(OTf)2-SO3Ph-PMO). It exhibited superior catalytic reactivity compared to those of the homogeneous catalyst scandium triflate and Sc(OTf)2-SO3Ph-SBA-15, without the phenyl groups inside the mesoporous wall of the water medium Barbier–Grignard and Mukaiyama–Aldol reactions. The physico–chemical characterizations demonstrated that its excellent catalytic performance was due to its ordered mesoporous channel and hydrophobicity microenvironment, which could stabilize and concentrate the substances as well as decrease intrinsic mass transfer resistance. Furthermore, the Sc(OTf)2-SO3Ph-PMO catalyst retained high catalytic reactivity even after 10 reuses, confirming its excellent c...
We report a facile coordination-induced growth approach to fabricate a SO3H-functionalized graphe... more We report a facile coordination-induced growth approach to fabricate a SO3H-functionalized graphene oxide and nanosized zeolitic imidazolate frameworks composite (ZIF-8@SO3H-GO) in mild conditions. The interactions between the functional groups on the sheets of GO with Zn(II) ions of ZIF-8 precursor initiated the nucleation and growth of ZIF-8 on the GO and meanwhile nanosized ZIF-8 particels were well dispersed on the sheets of GO. Owing to the co-existed basic imidazole moieties from ZIF-8 and the SO3- and CO2--functional groups on the sheets and Zn2+ ions from ZIF-8 in this Lewis acid rich composite, it exhibited high catalytic reactivity and selectivity in [3+3] formal cycloaddition reactions that consist of two-step Knoevenagel-type condensation and electrocyclic ring-closure to give various synthetically valuable pyranyl heterocycles. Interestingly, it was especially advantageous for the large size reactants. The results indicated that it displayed 2 times higher reactivity co...
ACS applied materials & interfaces, Jan 15, 2015
Composite materials, such as organic matrices doped with inorganic fillers, can generate new prop... more Composite materials, such as organic matrices doped with inorganic fillers, can generate new properties that exhibit multiple functionalities. In this paper, an epoxy-based nanocomposite was prepared that has a high thermal conductivity and a low electrical conductivity, as are required for the use of a material as electronic packaging and insulation. The performance of the epoxy was improved by incorporating a magnesium oxide-coated graphene (MgO@GR) nanomaterial into the epoxy matrix. We found that the addition of an MgO coating not only improved the dispersion of the graphene in the matrix and the interfacial bonding between the graphene and epoxy, but it also enhanced the thermal conductivity of the epoxy while retaining the electrical insulation. By adding 7 wt.% of MgO@GR, the thermal conductivity of the epoxy nanocomposites was enhanced by 76% compared with that of the neat epoxy, and the electrical resistivity was maintained at 8.66×1014 Ω·m.
The Chinese-German Journal of Clinical Oncology, 2008
Objective To study the clinical significance of human mammaglobin (hMAM) mRNA in peripheral bloo... more Objective To study the clinical significance of human mammaglobin (hMAM) mRNA in peripheral blood of patients with breast cancer. Methods The expression of hMAM mRNA was detected in peripheral blood from patients with breast cancer, breast benign lesions, healthy volunteers by nested reverse transcription polymerase chain reaction (nested-RT-PCR) method. The possible correlations of hMAM mRNA expression with clinico-pathological parameters and related molecular
Journal of environmental sciences (China), 2015
Size-resolved aerosol samples were collected by MOUDI in four seasons in 2007 in Beijing. The PM1... more Size-resolved aerosol samples were collected by MOUDI in four seasons in 2007 in Beijing. The PM10 and PM1.8 mass concentrations were 166.0±120.5 and 91.6±69.7μg/m(3), respectively, throughout the measurement, with seasonal variation: nearly two times higher in autumn than in summer and spring. Serious fine particle pollution occurred in winter with the PM1.8/PM10 ratio of 0.63, which was higher than other seasons. The size distribution of PM showed obvious seasonal and diurnal variation, with a smaller fine mode peak in spring and in the daytime. OM (organic matter=1.6×OC (organic carbon)) and SIA (secondary inorganic aerosol) were major components of fine particles, while OM, SIA and Ca(2+) were major components in coarse particles. Moreover, secondary components, mainly SOA (secondary organic aerosol) and SIA, accounted for 46%-96% of each size bin in fine particles, which meant that secondary pollution existed all year. Sulfates and nitrates, primarily in the form of (NH4)2SO4, ...
Metallurgical and Materials Transactions A, 2015
ABSTRACT The competition dependent on cold rolling reduction among main recrystallization texture... more ABSTRACT The competition dependent on cold rolling reduction among main recrystallization texture components in Fe-2.1 wt pct Si sheets was investigated from the hot band characterized by strong Cube ({001}〈100〉) at center layer and weak Goss ({110}〈001〉) at quarter layer. The deformation and recrystallization textures through thickness were both analyzed by X-ray diffraction technique. Goss, Cube, and {111}〈112〉 components dominate the recrystallization texture in sequence with the cold rolling reduction increasing from 60 to 90 pct. This recrystallization texture transition with cold rolling reduction can be explained in terms of the number and nature of nucleation sites for various texture components. A variety of final recrystallization textures are proposed for non-oriented silicon steel by designing texture and microstructure of hot band and cold rolling reduction.
Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology, 2015
Objective To establish a C26 cell strain stably expressing folate receptor α (FRα) for the subseq... more Objective To establish a C26 cell strain stably expressing folate receptor α (FRα) for the subsequent study of FRα DNA vaccine. Methods C26 cells were transfected with previously constructed recombinant eukaryotic expressing vector pcDNA3.1-FRα by Lipofectamine(TM)2000. Afterwards the cells were subjected to G418 (500 mg/mL) selection to get G418 resistant cells. And then single cell cloning was performed to generate monoclonal cell strain. The gene and protein expression levels of FRα of the monoclonal cell strain were further analyzed by reverse transcription PCR (RT-PCR) and fluorescence microscopy. The cells were cultured for several generations, and the mRNA expression of FRα was analyzed by RT-PCR at different generations to determine whether the transfected gene was stable or not during cell passaging. Results After transfection, G418 selection and single cell cloning, the monoclonal cell strain were established and proved to be able to express FRα mRNA and protein and keep t...
Journal of pediatric gastroenterology and nutrition, Jan 15, 2015
Cancer diagnosis and treatment may influence dietary intake. The validity of using self-reported ... more Cancer diagnosis and treatment may influence dietary intake. The validity of using self-reported methods to quantify dietary intake has not been evaluated in childhood cancer survivors. We validated total energy intake (EI) reported from food frequency questionnaire (FFQ) and repeated 24-hour diet recalls (24HRs) against total energy expenditure (TEE) measured using the doubly labeled water method in 16 childhood cancer survivors. Dietary underreporting, assessed by (EI-TEE)/TEE × 100%, was 22% for FFQ and 1% for repeated 24HRs. FFQ significantly underestimates dietary intake and should not be used to assess the absolute intake of foods and nutrients in childhood cancer survivors.
Pediatric blood & cancer, Jan 24, 2015
Survivors of pediatric acute lymphoblastic leukemia (ALL) have a significantly higher body mass i... more Survivors of pediatric acute lymphoblastic leukemia (ALL) have a significantly higher body mass index (BMI) than their peers. Understanding the critical time periods in which patients with pediatric ALL are vulnerable to unhealthy weight gain will lay the groundwork for developing effectively timed interventions. We determined the growth patterns of patients with pediatric ALL during and after treatment through the conduct of a systematic review and meta-analysis. A search of MEDLINE, Scopus, and Web of Science was performed from its inception through May 2014. Studies met the inclusion criteria if they included at least 10 patients of pediatric ALL, and longitudinally assessed BMI at diagnosis and at least one time point after diagnosis RESULTS: Twenty-one studies met the inclusion criteria for the systematic review and 16 were included in meta-analysis. The mean increase in BMI z-score during treatment in 1,514 patients with pediatric ALL was 0.81 (95% CI: 0.25-1.38). Specifically...
World journal of gastroenterology : WJG, Jan 14, 2015
To study the prevalence of human papillomavirus (HPV) in esophageal carcinoma in Tangshan, China,... more To study the prevalence of human papillomavirus (HPV) in esophageal carcinoma in Tangshan, China, a high-incidence area. Formalin-fixed, paraffin-embedded tissue specimens from 198 patients who were pathologically diagnosed with esophageal squamous cell carcinoma from 2011 to 2013 were obtained from a pathology department in Tangshan. DNA was extracted from all 198 specimens to detect HPV by polymerase chain reaction (PCR). β-globin PCR was performed to check the quality of the DNA extraction procedure. PCR was performed to detect a wide range of HPV types, and type-specific PCR was performed to detect HPV types 16 and 18. Negative and positive controls were used for HPV 16 and 18 detection. The DNA extraction method in this study appeared to be more effective than other previously reported methods. After DNA extraction, more than 98% of the tissue specimens had an acceptable result in the DNA qualification test (β-globin PCR). The overall prevalence of HPV in tumor tissues by GP6+/...
Journal of Phycology, 2010
The feasibility of utilizing discrete excitation-emission spectra (DEEMs) to identify dominant gr... more The feasibility of utilizing discrete excitation-emission spectra (DEEMs) to identify dominant groups of phytoplankton at both the genus and division levels was investigated. First, the characteristics of in vivo DEEMs were extracted using Coif2 wavelet. Second, optimal characteristic spectra of scale vectors (SOCS) and time-series vectors (TOCS) were selected by Fisher linear discriminant analysis (FLDA). Third, the SOCS and TOCS were sorted using hierarchical cluster analysis (HCA), and a tworank database was established according to their discrimination ability. Fourth, the discrimination of phytoplankton was established by nonnegative least squares (NNLS). For single-species samples, the correct identification ratios (CIRs) were 62.9%-100% at the genus level and 95.1%-100% at the division level. The dominant species in the mixtures had corresponding CIRs of 87.5% and 97.9%, and 23 dominant species were correctly identified. Prorocentrum donghaiense D. Lu, Thalassiosira nordenskioeldi Cleve, Chaetoceros socialis Lauder (bloom-forming species with a density of about 10 7 cellAEL )1 ), and Skeletonema costatum (Grev.) Cleve (a dominant species with a density of 10 4 -10 6 cellAEL )1 in seawater) were identified at the genus level. Other dominant species in seawater were identified at the division level if their density was 10 5 -10 6 cellAEL )1 .
Journal of Experimental Marine Biology and Ecology, 2009
An in vivo 3D fluorescence discrimination technique for ten harmful algal bloom (HAB) species tha... more An in vivo 3D fluorescence discrimination technique for ten harmful algal bloom (HAB) species that belong to eight genera of four divisions was developed by wavelet analysis. Daubechies-7 (db7) was employed as the mother wavelet. The fifth scale domains were selected as the discriminant characteristic spectra (DCS). Based on the DCS, The phytoplankton species at different growth stages were classified
Burns, 2015
This article reports a chemical burn incident that occurred on 31 August 2013 in Shanghai. We des... more This article reports a chemical burn incident that occurred on 31 August 2013 in Shanghai. We describe situations at the scene, emergency management, triage, evacuation, and follow-up of the victims. The scene of the incident and information on the 41 victims of this industrial chemical incident were investigated. The emergency management, triage, evacuation, and hospitalization data of the patients were summarized. At the time of the incident, 58 employees were working in a closed refrigerator workshop, 41 of whom sustained burns following the leakage of anhydrous ammonia. Ten victims died of severe inhalation injury at the scene, and another five victims died during the process of evacuation to the nearest hospital. After receiving information on the incident, a contingency plan for the burn disaster was launched immediately, and a first-aid group and an emergency and triage group were dispatched by the Changhai Hospital to the scene to aid the medical organization, emergency management, triage, and evacuation. All casualties were first rushed to the nearest hospital by ambulance. The six most serious patients with inhalation injuries were evacuated to the Changhai Hospital and admitted to the burn intensive care unit (BICU) for further treatment, one of whom died of respiratory failure and pulmonary infection. This mass casualty incident of anhydrous ammonia leakage caused potential devastating effects to the society, especially to the victims and their families. Early first-aid organization, emergency management, triage, and evacuation were of paramount importance, especially rapid evaluation of the severity of inhalation injury, and subsequent corresponding medical treatment. The prognosis of ammonia burns was poor and the sequelae were severe. Management and treatment lessons were drawn from this mass casualty chemical burn incident.
slow metabolizing groups, respectively: ADH3 1-2 (OR ¼ 1.5, 95% CI 0.9-2.4) and ADH3 2-2 (OR ¼ 1.... more slow metabolizing groups, respectively: ADH3 1-2 (OR ¼ 1.5, 95% CI 0.9-2.4) and ADH3 2-2 (OR ¼ 1.3, 95% CI 0.5-3.5). Fast metabolizers who drank 15-30 g/day of alcohol had 2.3 times (95% CI 1.3-4.0) greater risk of breast cancer than non-drinkers who were intermediate or slow metabolizers. This association for fast metabolizers who drank 15-30 g/day was particularly pronounced
Pregnancy conditions accompanied by high blood pressure, such as preeclampsia and pregnancy-relat... more Pregnancy conditions accompanied by high blood pressure, such as preeclampsia and pregnancy-related hypertension, have been associated with a lower risk of breast cancer in several epidemiologic studies. It is unknown whether length of gestation or multiple occurrence of these conditions alters the association with breast cancer. It is also unknown whether the inverse association between preeclampsia and breast cancer risk
J. Mater. Chem. A, 2014
ABSTRACT A new strategy of bonding organometallics to an MCM-41 thin layer coated onto Fe3O4 micr... more ABSTRACT A new strategy of bonding organometallics to an MCM-41 thin layer coated onto Fe3O4 microspheres with strong magnetism, denoted as M–PPh2-MCM-41@SiO2@Fe3O4, where M = Pd(II) and Rh(I), has been developed for the immobilization of homogeneous catalysts. In comparison with the traditional M–PPh2-MCM-41 catalysts with irregular shapes and the M–PPh2-SiO2@Fe3O4 without an ordered mesoporous structure, the current catalysts exhibited much higher activities for various water-based Suzuki, Sonogashira and Miyaura–Michael organic reactions, due to the high dispersion of active sites and the uniform catalyst particles with short-ordered mesopores favoring reactant diffusion and adsorption. Their catalytic efficiencies are comparable with those of the homogeneous catalysts, and they could be easily recycled for reuse by simply applying an external magnet.
ACS Catalysis, 2014
ABSTRACT The amine-functionalized graphene oxide was prepared by a facile one-step silylation app... more ABSTRACT The amine-functionalized graphene oxide was prepared by a facile one-step silylation approach and used as an acid–base bifunctional catalyst in one-pot cascade reactions containing successive acetal hydrolysis and Knoevenagel condensation owing to the separate coexistence of original carboxylic acid on the edge of the GO sheet and the postgrafted amine groups on the GO basal surface. This catalyst exhibited much higher activity than either amine-functionalized active carbon, amine-functionalized SBA-15, or amine-functionalized Al2O3 due to the enriched surface acid sites and the diminished diffusion limitation as well as high catalyst dispersion in liquid solution due to the unique two-dimensional structure. More importantly, this catalyst could be easily recycled and used repetitively, showing potential application in industry.
The recrystallization texture in grain oriented silicon steel sheets, which were annealed at diff... more The recrystallization texture in grain oriented silicon steel sheets, which were annealed at different primary annealing temperatures with and without an electric field, was investigated. An automated electron backscattered diffraction (EBSD) technique was used to analyze the recrystallization texture. It was found that recovery and application of electric field in primary annealing lead to an increase of {001} component and a decrease of {111} component after annealing at 900 • C. The development of recrystallization texture can be explained in terms of the effects of electric field and primary annealing temperature on recovery.
Chemical Science
Water-medium organic synthesis on reusable heterogeneous organometal catalysts represents an impo... more Water-medium organic synthesis on reusable heterogeneous organometal catalysts represents an important trend in green chemistry owing to the absence of pollution from both toxic organic solvents as reaction media and heavy metal ions leached from the catalysts. However, heterogeneous organometal catalysts usually display lower activities than their corresponding homogeneous ones due to the decreased dispersion and unmatched microenvironment of the active sites, together with enhanced diffusion limitation. Great efforts have been made to develop active heterogeneous organometal catalysts by adjusting the composition, engineering the surface chemistry, and tailoring the morphology and pore structure. In this minireview, we summarize recent progress in designing heterogeneous organometal catalysts with high efficiency and strong durability in various water-medium organic reactions and discuss their structure–performance relationships. This might be beneficial for the development of bot...
ChemInform
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ACS Sustainable Chemistry & Engineering
Phenyl-bridged periodic mesoporous organosilica modified with sodium benzenesulfonate groups (NaS... more Phenyl-bridged periodic mesoporous organosilica modified with sodium benzenesulfonate groups (NaSO3Ph-PMO) was frabicated by template-assembled co-condensation and subsequent ion-exchange processes. This functionalized support efficiently anchored scandium triflate to generate a mesoporous Lewis acid catalyst (Sc(OTf)2-SO3Ph-PMO). It exhibited superior catalytic reactivity compared to those of the homogeneous catalyst scandium triflate and Sc(OTf)2-SO3Ph-SBA-15, without the phenyl groups inside the mesoporous wall of the water medium Barbier–Grignard and Mukaiyama–Aldol reactions. The physico–chemical characterizations demonstrated that its excellent catalytic performance was due to its ordered mesoporous channel and hydrophobicity microenvironment, which could stabilize and concentrate the substances as well as decrease intrinsic mass transfer resistance. Furthermore, the Sc(OTf)2-SO3Ph-PMO catalyst retained high catalytic reactivity even after 10 reuses, confirming its excellent c...
We report a facile coordination-induced growth approach to fabricate a SO3H-functionalized graphe... more We report a facile coordination-induced growth approach to fabricate a SO3H-functionalized graphene oxide and nanosized zeolitic imidazolate frameworks composite (ZIF-8@SO3H-GO) in mild conditions. The interactions between the functional groups on the sheets of GO with Zn(II) ions of ZIF-8 precursor initiated the nucleation and growth of ZIF-8 on the GO and meanwhile nanosized ZIF-8 particels were well dispersed on the sheets of GO. Owing to the co-existed basic imidazole moieties from ZIF-8 and the SO3- and CO2--functional groups on the sheets and Zn2+ ions from ZIF-8 in this Lewis acid rich composite, it exhibited high catalytic reactivity and selectivity in [3+3] formal cycloaddition reactions that consist of two-step Knoevenagel-type condensation and electrocyclic ring-closure to give various synthetically valuable pyranyl heterocycles. Interestingly, it was especially advantageous for the large size reactants. The results indicated that it displayed 2 times higher reactivity co...
ACS applied materials & interfaces, Jan 15, 2015
Composite materials, such as organic matrices doped with inorganic fillers, can generate new prop... more Composite materials, such as organic matrices doped with inorganic fillers, can generate new properties that exhibit multiple functionalities. In this paper, an epoxy-based nanocomposite was prepared that has a high thermal conductivity and a low electrical conductivity, as are required for the use of a material as electronic packaging and insulation. The performance of the epoxy was improved by incorporating a magnesium oxide-coated graphene (MgO@GR) nanomaterial into the epoxy matrix. We found that the addition of an MgO coating not only improved the dispersion of the graphene in the matrix and the interfacial bonding between the graphene and epoxy, but it also enhanced the thermal conductivity of the epoxy while retaining the electrical insulation. By adding 7 wt.% of MgO@GR, the thermal conductivity of the epoxy nanocomposites was enhanced by 76% compared with that of the neat epoxy, and the electrical resistivity was maintained at 8.66×1014 Ω·m.
The Chinese-German Journal of Clinical Oncology, 2008
Objective To study the clinical significance of human mammaglobin (hMAM) mRNA in peripheral bloo... more Objective To study the clinical significance of human mammaglobin (hMAM) mRNA in peripheral blood of patients with breast cancer. Methods The expression of hMAM mRNA was detected in peripheral blood from patients with breast cancer, breast benign lesions, healthy volunteers by nested reverse transcription polymerase chain reaction (nested-RT-PCR) method. The possible correlations of hMAM mRNA expression with clinico-pathological parameters and related molecular
Journal of environmental sciences (China), 2015
Size-resolved aerosol samples were collected by MOUDI in four seasons in 2007 in Beijing. The PM1... more Size-resolved aerosol samples were collected by MOUDI in four seasons in 2007 in Beijing. The PM10 and PM1.8 mass concentrations were 166.0±120.5 and 91.6±69.7μg/m(3), respectively, throughout the measurement, with seasonal variation: nearly two times higher in autumn than in summer and spring. Serious fine particle pollution occurred in winter with the PM1.8/PM10 ratio of 0.63, which was higher than other seasons. The size distribution of PM showed obvious seasonal and diurnal variation, with a smaller fine mode peak in spring and in the daytime. OM (organic matter=1.6×OC (organic carbon)) and SIA (secondary inorganic aerosol) were major components of fine particles, while OM, SIA and Ca(2+) were major components in coarse particles. Moreover, secondary components, mainly SOA (secondary organic aerosol) and SIA, accounted for 46%-96% of each size bin in fine particles, which meant that secondary pollution existed all year. Sulfates and nitrates, primarily in the form of (NH4)2SO4, ...
Metallurgical and Materials Transactions A, 2015
ABSTRACT The competition dependent on cold rolling reduction among main recrystallization texture... more ABSTRACT The competition dependent on cold rolling reduction among main recrystallization texture components in Fe-2.1 wt pct Si sheets was investigated from the hot band characterized by strong Cube ({001}〈100〉) at center layer and weak Goss ({110}〈001〉) at quarter layer. The deformation and recrystallization textures through thickness were both analyzed by X-ray diffraction technique. Goss, Cube, and {111}〈112〉 components dominate the recrystallization texture in sequence with the cold rolling reduction increasing from 60 to 90 pct. This recrystallization texture transition with cold rolling reduction can be explained in terms of the number and nature of nucleation sites for various texture components. A variety of final recrystallization textures are proposed for non-oriented silicon steel by designing texture and microstructure of hot band and cold rolling reduction.
Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology, 2015
Objective To establish a C26 cell strain stably expressing folate receptor α (FRα) for the subseq... more Objective To establish a C26 cell strain stably expressing folate receptor α (FRα) for the subsequent study of FRα DNA vaccine. Methods C26 cells were transfected with previously constructed recombinant eukaryotic expressing vector pcDNA3.1-FRα by Lipofectamine(TM)2000. Afterwards the cells were subjected to G418 (500 mg/mL) selection to get G418 resistant cells. And then single cell cloning was performed to generate monoclonal cell strain. The gene and protein expression levels of FRα of the monoclonal cell strain were further analyzed by reverse transcription PCR (RT-PCR) and fluorescence microscopy. The cells were cultured for several generations, and the mRNA expression of FRα was analyzed by RT-PCR at different generations to determine whether the transfected gene was stable or not during cell passaging. Results After transfection, G418 selection and single cell cloning, the monoclonal cell strain were established and proved to be able to express FRα mRNA and protein and keep t...
Journal of pediatric gastroenterology and nutrition, Jan 15, 2015
Cancer diagnosis and treatment may influence dietary intake. The validity of using self-reported ... more Cancer diagnosis and treatment may influence dietary intake. The validity of using self-reported methods to quantify dietary intake has not been evaluated in childhood cancer survivors. We validated total energy intake (EI) reported from food frequency questionnaire (FFQ) and repeated 24-hour diet recalls (24HRs) against total energy expenditure (TEE) measured using the doubly labeled water method in 16 childhood cancer survivors. Dietary underreporting, assessed by (EI-TEE)/TEE × 100%, was 22% for FFQ and 1% for repeated 24HRs. FFQ significantly underestimates dietary intake and should not be used to assess the absolute intake of foods and nutrients in childhood cancer survivors.
Pediatric blood & cancer, Jan 24, 2015
Survivors of pediatric acute lymphoblastic leukemia (ALL) have a significantly higher body mass i... more Survivors of pediatric acute lymphoblastic leukemia (ALL) have a significantly higher body mass index (BMI) than their peers. Understanding the critical time periods in which patients with pediatric ALL are vulnerable to unhealthy weight gain will lay the groundwork for developing effectively timed interventions. We determined the growth patterns of patients with pediatric ALL during and after treatment through the conduct of a systematic review and meta-analysis. A search of MEDLINE, Scopus, and Web of Science was performed from its inception through May 2014. Studies met the inclusion criteria if they included at least 10 patients of pediatric ALL, and longitudinally assessed BMI at diagnosis and at least one time point after diagnosis RESULTS: Twenty-one studies met the inclusion criteria for the systematic review and 16 were included in meta-analysis. The mean increase in BMI z-score during treatment in 1,514 patients with pediatric ALL was 0.81 (95% CI: 0.25-1.38). Specifically...
World journal of gastroenterology : WJG, Jan 14, 2015
To study the prevalence of human papillomavirus (HPV) in esophageal carcinoma in Tangshan, China,... more To study the prevalence of human papillomavirus (HPV) in esophageal carcinoma in Tangshan, China, a high-incidence area. Formalin-fixed, paraffin-embedded tissue specimens from 198 patients who were pathologically diagnosed with esophageal squamous cell carcinoma from 2011 to 2013 were obtained from a pathology department in Tangshan. DNA was extracted from all 198 specimens to detect HPV by polymerase chain reaction (PCR). β-globin PCR was performed to check the quality of the DNA extraction procedure. PCR was performed to detect a wide range of HPV types, and type-specific PCR was performed to detect HPV types 16 and 18. Negative and positive controls were used for HPV 16 and 18 detection. The DNA extraction method in this study appeared to be more effective than other previously reported methods. After DNA extraction, more than 98% of the tissue specimens had an acceptable result in the DNA qualification test (β-globin PCR). The overall prevalence of HPV in tumor tissues by GP6+/...