Hue Phan - Academia.edu (original) (raw)

Papers by Hue Phan

Tạp chí Y Dược học Cần Thơ

Background: ASA classification has been applied all over the world in premedication. The 2019 Ame... more Background: ASA classification has been applied all over the world in premedication. The 2019 Amended ASA-PS was modified by new definitions, approved examples, especially definition for emergent patients. In Vietnam, there has not any independent study on ASA- PS classification up to now. The addition of “E” denotes emergency surgery. Objectives: To determine the ratio of patients in each ASA class, their underlying diseases and complications that might happen intraoperative as well as postoperative. Materials and methods: This cross-sectional descriptive study was conducted at Anesthesiology Department of Can Tho University of Medicine and Pharmacy Hospital from January 2021 to December 2021, the sample size was ≥ 420, and the sampling method was convenience sampling. The sample included 528 patients of both emergent and elective operations included. Results: The ratios of ASA were I (39.21%), II (33.52%), III (17.42%), IE (6.06%), IIE (3.03%) and IIIE (0.76%). None of the cases ...

In vivo time course analysis of reporter expression of Tg((1... more In vivo time course analysis of reporter expression of Tg((1117–1)EIand1:eGFP) (N = 3; n = 35) (B-D) and Tg(2PΔepi-EIand1:eGFP) (N = 3; n = 31) (E-G), at 3dpf (B, E), in intact fins at 90dpf (C, F), and at 4dpa (D, G) during fin regeneration. Note: adult fins are oriented in the proximal to distal direction (left to right). (B-D) Tg((1117–1)EIand1:eGFP) expression only occurs in the ectodermal/basal epithelial tissue; (E-G) Tg(2PΔepi-EIand1:eGFP), only mesenchymal tissue. fr: fin ray. N = number of lines found; n = total number of fish analysed. Scale bars: B, E = 25μm, C, F = 200μm and D, G = 200μm.</p

(A) Reporter expression of Tg(2P-EIand1:eGFP) (25 ... more (A) Reporter expression of Tg(2P-EIand1:eGFP) (25 fish were analysed) occurs within the ectodermal tissue and fin rays along the proximal-distal axis of the developing caudal fin. It is notably brighter as it approaches the distal region at 30dpf. (B) Reporter expression occurs along the proximal-distal axis in the fin rays and is beginning to approach the distal edge of the fin where ectodermal-specific expression is present at 40dpf. (C, D) At 50dpf and 60dpf, eGFP expression in the fin rays distalizes and is present in the epithelial tissue located at the very distal regions of the fin. (E, E’) Reporter expression only occurs at the distal tips of the fin rays and at the distal edge of the interrays (pink arrowheads). (E’) close-up on panel E. (F) Transverse sections from a 30dpf caudal fin were obtained in the region indicated by the yellow dotted line. (G) Immunostaining showing eGFP expression (white arrowheads) localized deep to the hemirays (h; delineated by yellow line) (n = 6). Immunostaining for Zns5, which is a pan-osteoblast marker, labelling osteoblasts surrounding the hemirays (h; yellow arrowheads) and eGFP (small white arrowheads) in Tg(2P-EIand1:eGFP) on transverse cryosections of 30dpf larvae (n = 6). (H) eGFP is localized in layers of cells deep and adjacent to osteoblast layers lining the hemirays (h). (H’) Merge on bright field. Double fluorescence in situ hybridization (n = 12) for and1 (I) and eGFP of Tg(2P-EIand1:eGFP) (I’). (I”) Merge between red and green showing colocalization between and1 and egfp (white arrowheads). (J) Merge with DAPI showing colocalization occurring within the fin ray mesenchymal tissues. Note: Any expression observed outside of the fin ray mesenchymal compartment is background staining. n = # of fish from which sections were obtained. Scale bars: A-E, E’ = 200μm, F = 100μm, G, H-H’ = 50μm and I-I”, J = 10μm.</p

American Laboratory, 1993

International Journal of Nanotechnology, 2018

The goal of this paper is to investigate the influence of parameters of the Bosch deep reactive i... more The goal of this paper is to investigate the influence of parameters of the Bosch deep reactive ion etching (DRIE) process on etched surface profile, sidewall profile and etch rate of micrometre silicon features. By investigating these parameters, we found the conditions to obtain smooth sidewall, high etch rate and balance of chemical and physical etching in the DRIE process. In this paper, the silicon surface was covered by a thin silver patterning, created by lift-off, as a hard mask for the DRIE process. The etched samples were characterised by optical microscopy and mechanical profilometry. The results show smooth sidewall of 136 µm-deep silicon trenches obtained at a high etch rate of 4 µm/min using 5 sccm C 4 F 8 , 8 sccm O 2 and 24 W of bias power.

Science and Technology Development Journal, 2011

This work investigates the polyanion initiated gelation process in fabricating chitosan (CS)-trip... more This work investigates the polyanion initiated gelation process in fabricating chitosan (CS)-tripolyphosphate (TPP) nanoparticle intended to be used as protein delivery carrier. Variations in cross-linking agents, CS/TPP weight ratio and solution pH were investigated. The chitosan nanoparticles were characterized by several analytical techniques such as FT-IR, XRD, FE_SEM and TEM. Finally, protein loading efficiency (LE) and protein loading capacity (LC) were investigated.

International Journal of Data and Network Science, 2020

This research is intended to systematize the theoretical background of chatbots and assess the fa... more This research is intended to systematize the theoretical background of chatbots and assess the factors affecting customer satisfaction when they use Facebook chatbot. The study provides an insightful analysis for planners and field workers who are involved in the promotion of Facebook chatbot for online stores in Vietnam. It suggests different recommendations and solutions for individuals and organizations providing chatbot services on Facebook platform, in order to improve service quality and operational efficiency. An analysis of 271 customers who used chatbot services pointed out and evaluated the positive and negative relationships around customer satisfaction.

PLOS ONE, 2019

Actinotrichia are the first exoskeletal elements formed during zebrafish fin development. These r... more Actinotrichia are the first exoskeletal elements formed during zebrafish fin development. These rigid fibrils serve as skeletal support for the fin fold and as substrates for mesenchymal cell migration. In the adult intact fins, actinotrichia are restricted to the distal domain of the fin. Following fin amputation, actinotrichia also reform during regeneration. The actinodin gene family codes for structural proteins of actinotrichia. We have previously identified cisacting regulatory elements in a 2kb genomic region upstream of the first exon of actinodin1, termed 2P, required for tissue-specific expression in the fin fold ectoderm and mesenchyme during embryonic development. Indeed, 2P contains an ectodermal enhancer in a 150bp region named epi. Deletion of epi from 2P results in loss of ectodermal-specific activity. In the present study, we sought to further characterize the activity of these regulatory sequences throughout fin development and during adult fin regeneration. Using a reporter transgenic approach, we show that a site within the epi region, termed epi3, contains an early mesenchymal-specific repressor. We also show that the larval fin fold ectodermal enhancer within epi3 remains functional in the basal epithelial layer during fin regeneration. We show that the first non-coding exon and first intron of actinodin1 contains a transcriptional enhancer and an alternative promoter that are necessary for the persistence of reporter expression reminiscent of actinodin1 expression during adulthood. Altogether, we have identified cis-acting regulatory elements that are required for tissue-specific expression as well as full recapitulation of actinodin1 expression during adulthood. Furthermore, the characterization of these elements provides us with useful molecular tools for the enhancement of transgene expression in adulthood.

Advances in Natural Sciences: Nanoscience and Nanotechnology, 2019

In this paper silver-assisted chemical etching (SACE) was studied to increase roughness and reduc... more In this paper silver-assisted chemical etching (SACE) was studied to increase roughness and reduce light reflection from the surface of n-type (100) mono-crystalline silicon. SACE process includes two basic steps which are silver deposition and chemical etching step. Simple electroless silver deposition step using mixture of AgNO 3 and HF was utilized to form silver nanoparticles onto n-type silicon surface. Following chemical etching step was carried out by immersing samples in mixture of HF and H 2 O 2. Concentration of AgNO 3 in eletroless deposition step and concentration of HF in chemical etching step were investigated to get minimum reflectance. The surface of sample was characterized by scanning electron microscopy (SEM), field emission scanning electron microscopy (FE-SEM) and sample reflectance was measured at the wavelength range from 350-1100 nm. The results show that reflectance depends on AgNO 3 concentration in electroless deposition step and HF concentration in etching step and the minimum solar-weighted reflectance is 1.74%. This method can be considered as simple, inexpensive method to effectively increase roughness and suppress light reflection for photovoltaic, optoelectronic, sensor, photonic applications.

Development (Cambridge, England), Jun 11, 2018

During zebrafish fin regeneration, blastema cells lining the epidermis differentiate into osteobl... more During zebrafish fin regeneration, blastema cells lining the epidermis differentiate into osteoblasts and joint cells to reconstruct the segmented bony rays. We show that osteoblasts and joint cells originate from a common cell lineage, but are committed to different cell fates. Pre-osteoblasts expressing commit to the osteoblast lineage upon expressing , whereas the strong upregulation of correlates with a commitment to a joint cell type. In the distal regenerate, , and are sequentially upregulated at regular intervals to define the newly identified presumptive joint cells. Presumptive joint cells mature into joint-forming cells, a distinct cell cluster that maintains the expression of these factors. Analysis of null mutants reveals that is acting upstream of and downstream of or in parallel with Calcineurin activity, potentially through the inhibition of retinoic acid signaling, regulates , and expression during joint formation. Furthermore, retinoic acid treatment induces osteobl...

Advances in Natural Sciences: Nanoscience and Nanotechnology, 2017

This paper presents the entire fabrication process including photolithography, sputtering, deep r... more This paper presents the entire fabrication process including photolithography, sputtering, deep reactive ion etching (Bosch DRIE process) on silicon substrate and bonding process between the lid and silicon substrate to create a designed filtration microfluidic chip with dimension of 28 mm×7 mm, one inlet port and one outlet port. A pattered silver thin film was deposited on a silicon sample by the lift-off method. Subsequently the newly fabricated sample was anisotropically etched by Bosch DRIE process. Some parameters of Bosch DRIE process such as bias power, duration of etching step and passivation step, oxygen presence were studied to explore the dependence of silicon channel depth and etched shape profile on these parameters. An optimized process was utilized to fabricate a featured silicon channel with vertical, smooth sidewalls and an overall good uniformity. The silicon channel has four arrays of microposts with various distances between microposts from 25 μm to 100 μm. The depth of the silicon channel was about 150 μm. After that, silicon substrate was bonded with mica lid by adhesive bonding method to form the completed filtration microfluidic chip. The samples were characterized by scanning electron microscopy (SEM), mechanical profilometer (DEKTAK 6 M), optical microscopy (Olympus MX51). In this paper a test was performed to demonstrate how the microfluidic chip works by pumping solution with many various sizes of particles through the inlet port of the microfluidic chip and obtaining a solution with desired particles sizes (smaller than 25 μm) through another port. Moreover, the chip could be pumped de-ionized water through outlet port for backwash in order to make this microfluidic chip reusable. Finally, a few applications of microfluidic chips are presented to illustrate the advantages of this technology and the potential for future development.

Advances in Natural Sciences: Nanoscience and Nanotechnology, 2015

Electroplating is an important step in microfabrication in order to increase thickness of undersi... more Electroplating is an important step in microfabrication in order to increase thickness of undersized parts up to a few micrometers with a low-cost, fast method that is easy to carry out, especially for metals such as copper, nickel, and silver. This important step promotes the development of the fabrication technology of electronic devices on a flexible substrate, also known as flexible electronic devices. Nevertheless, this technology has some disadvantages such as low surface uniformity and high resistivity. In this paper, parameters of copper electroplating were studied, such as the ratio of copper (II) sulfate (CuSO4) concentration to sulfuric acid (H2SO4) concentration and electroplating current density, in order to obtain low resistivity and high surface uniformity of the copper layer. Samples were characterized by scanning electron microscopy (SEM), four-point probe, and surface profiler. The results showed that the sample resistivity could be controlled from about 2.0 to about 3.5 μΩ cm, and the lowest obtained resistivity was 1.899 μΩ cm. In addition, surface uniformity of the electroplated copper layer was also acceptable. The thickness of the copper layer was about 10 μm with an error of about 0.5 μm. The most suitable conditions for the electroplating process were CuSO4 concentration of 0.4 mol l−1, H2SO4 concentration of 1.0 mol l−1, and low electroplating current density of 10–20 mA cm−2. All experiments were performed on a flexible polyethylene terephthalate (PET) substrate.

Agriculture, Ecosystems & Environment, 1996

Technology, has written a highly useful and scholarly text that can serve well as a standard refe... more Technology, has written a highly useful and scholarly text that can serve well as a standard reference overview text. The book provides a collection of contemporary and useful information relating to the treatment of water and wastewater for municipal, sanitary, and industrial applications. It can provide the practitioner with a thorough and rich review of the underlying science and engineering of wastewater technology. It is a helpful and i.nstructive addition to the basic reference library. Given the breadth of operations and technologies implemented by water users and managers, it is a noteworthy accomplishment that the author has been able to successfully reduce the knowledge base to the practical limits of a single volume text. This has been accomplished by giving principal attention to those unit operations and processes which have been used in general applications and have been of interest to the broadest range of users. More complex, specific or detailed information is found elsewhere. Recent, potentially innovative technologies that have not seen widespread application are not discussed. Although the material is primarily descriptive in nature, the text is extensively supplemented by numerous diagrams, drawings, tables and charts. Theory of equipment and processes is provided in many instances and aids in clarifying discussions of applications and operations. From this, the reader can acquire a reasonable appreciation of the subject matter. A thoughtful inclusion is a glossary of terms. It is somewhat disappointing to find that there are practically no references provided from which the interested reader can obtain further, more detailed information. Taken as a whole, the text should be a useful overview reference for civil, environmental, manufacturing, petrochemical, and chemical engineers, as well as plant operators and technicians.