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Papers by mohammad kalhor
Cultural History Studies Research journal of Iranian society of History, Oct 1, 2018
The objective of this study was to analize the Iran’s Political Problems from the Viewpoint of Fe... more The objective of this study was to analize the Iran’s Political Problems from the Viewpoint of Female Travelers in the Nasseri Era. Refering to the methodology: this research has been done by descriptive method and by studying written and historical works. Researchers have extracted material by examining historical books, articles and writings. In this study, we have tried to collect and sort out the problems of passengers. Results show that during Qajar Era, due to the strategic position of Iran and the Persian Gulf, this region was of particular interest to the superior international powers; therefore, travelers, statesmen, ambassadors, and merchants from many different European and non-European countries traveled to Iran. In these foreign delegations and political groups, there were also female figures, including Lady Sheil, Jane Dieulafoy, Gertrude Bell, Madame Wolfson, Isabella Bird Bishop and Carla Serena. Some of these women came to Iran as members of political delegations an...
3 Abstract: Providing house for various people in societies has become the main concerns for gove... more 3 Abstract: Providing house for various people in societies has become the main concerns for governance in countries. Iran as a country with the population growing and providing housing for this population has been one of the main concerns is government. In recent decade, Mehr housing project has been considered as serious policy by the government in Iran. The main objective of this project is providing housing for homeless people with priority to low-income strata. However, in this study the main purpose is determining functional status of Mehr housing project and assessing successful of project in Saqez. The research hypothesis is; Mehr housing project achieved to desired performance in Saqez. Statistical population of this study consisted of all Experts and managers in organization involved in with mehr housing projects in Saqez city (N= 300). Using Cochran's sampling formula, 169 people were selected as a sample. Respondents were selected by using Stratified random sampling ...
Study has been carried out on the analysis of the dynamic curving performance of coupled single-a... more Study has been carried out on the analysis of the dynamic curving performance of coupled single-axle bogies. Based on the static physical model for a bogie and the dynamic nonlinear model for a train, the optimum value of the couple stiffness is found and nonlinear curving performances are predicted with the variation of the key parameters.
Agricultural Engineering International Cigr Journal, Mar 23, 2015
A system was designed and fabricated to grade apple automatically based on its size using machine... more A system was designed and fabricated to grade apple automatically based on its size using machine vision. The system included several units to single out, orient and grade apple. A cylindrical container with a circular hole in its bottom, which was equipped with agitator, was built to single out the apples. This mechanism delivered apples to an orientation unit, one by one. Two wooden rails with a specific form which was located on the ramp via adequate slope were used to orient the apple during rolling. The apple was placed under the camera to take its photo, after orientation. The photo was transferred to computer for image processing to determine the apple grade based on its size. A belt conveyor carried the apple and set it in appropriate place regard to its grade. As a final point, wind spray valve was opened and the apple was pushed to the marked box. In order to assess the constructed system, 50 red and golden apples of each grade were chosen and the completely randomized design test was conducted. Results demonstrated that the most consumed time was related to image processing. Almost 85% of the apples were properly oriented in the orientation unit and were correctly graded. The overall system performance was satisfactory. Thus, the system can be consumed to grade apple automatically.
Materia Socio Medica, 2014
Introduction: Family physician is the increasing efforts to promote physician and other human res... more Introduction: Family physician is the increasing efforts to promote physician and other human resources in the health care systems. Goal: Investigate Human resources situation of the family physician program in six pilot cities in Khuzestan province in the southwest of Iran. Methods: A cross-sectional descriptive study was conducted to examine the family physician program in 2011. In this study, 15 healthcare teams in six pilot cities in Iran were assessed. Data was compiled from family physician officer document in vice treatment of Ahwaz University of medical sciences. National instructions of family physician was used to identify current gaps. Results: The survey findings indicated that there is a doctor's shortage about 36% in the health team that deployed in the first level of referral system. Also on the team, the 34% shortage of nurses and 60% shortages of nutrition personnel are seen. Specialists with offices in cities of second referral level, there have not welcomed the program. Conclusions: It seems that to facilitate patient access to physicians under contract with family physician program and the referral system in level two and level three, adopting arrangements to attract specialists and improving their maintenance is necessary.
Virus Genes, 2006
One hundred and twenty three cucurbit samples with one or more symptoms of leaf mosaic, leaf dist... more One hundred and twenty three cucurbit samples with one or more symptoms of leaf mosaic, leaf distortion, fruit mosaic, stunting, mottling and yellowing were collected from several locations in the northwest region of Iran. Screening by double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) with a cucumber mosaic virus (CMV) polyclonal antibody, produced positive reactions from 13 samples. However, none of these positive samples reacted with a CMV subgroup-II (S-II)-specific monoclonal antibody in a triple antibody sandwich (TAS)-ELSIA. When total RNA from the CMV-infected samples was subjected to reverse transcription polymerase chain reaction (RT-PCR) with a pair of primers corresponding to the flanking regions of the virus coat protein (CP) gene, an expected DNA fragment of about 872 bp was amplified from 10 of the 13 isolates. This fragment covered the CP open reading frame (ORF) plus 92 and 123 bp of the 5' and 3' flanking regions, respectively. Restriction analysis with MspI (HpaII) was done on 9 of the PCR products and revealed a previously described CMV subgroup I (S-I) specific profile (537 and 335 bp fragments) for the isolates B13, B23, B5, SH5, SH17, S342 and S337, and an additional fragment, suggestive of combined profiles, was present for B13, SH5 and S342. Two other isolates, SH12 and B7 had a CMV S-II MspI profile (four visible fragments and a predicted non-visible 28-bp fragment on 2% agarose). Also, BsuRI (HaeIII) did not cut the PCR products characteristic of the CMV S-I specific MspI profile, whereas for the S-II isolates, BsuRI gave two fragments with sizes of approximately 559 and 313 bp. Nucleotide (nt) sequences of clones from the isolates B13, B23, SH5, SH17, S337 and SH12 were determined and aligned with those of previously published CMV strains and isolates. Consensus parsimonious trees constructed on the basis of the whole amplified region (841 nt excluding the primer sequences), CP ORF (nt or deduced amino acid data), or either of the flanking regions confirmed the RFLP data so that B13, B23, S337, SH5 and SH17 were placed in the CMV S-IA subclade, and SH12 in the S-II Clade. These analyses showed that both CMV S-I and S-II variants occur in the northwest region of Iran although S-I variants appeared to have a higher incidence.
Journal of the Optical Society of America A, 2006
Reflection, transmission, and absorption of electromagnetic waves by periodic arrays of conductin... more Reflection, transmission, and absorption of electromagnetic waves by periodic arrays of conducting or dielectric rectangular cylinders are studied by a finite-difference time-domain technique. Truncated gratings made of lossless and lossy conducting and dielectric elements are considered. Results for surface current density, transmission, and reflection coefficients are calculated and compared with corresponding results in the literature, which are obtained by approximate or rigorous methods applicable only to idealized infinite models. An excellent agreement is observed in all cases, which demonstrates the accuracy and efficacy of our proposed analysis technique. Additionally, this numerical method easily analyzes practical gratings that contain a finite number of elements made of lossless, lossy, or even inhomogeneous materials. The results rapidly approach those for the idealized infinite arrays as the number of elements is increased. The method can also solve nested gratings, stacked gratings, and holographic gratings with little analytical or computational effort.
International Journal for Ion Mobility Spectrometry, 2016
Triazine herbicides and some of their transformation products are considered as one of the most i... more Triazine herbicides and some of their transformation products are considered as one of the most important classes of chemical pollutants owing to their widespread use and toxicity. Triazines and their degradation products have caused concern because they are toxic and persistent in water, soil, and organisms. The present paper describes the validation of ultrasound-assisted emulsification-microextraction (USAEME) method for determination of atrazine and simazine using ion mobility spectrometry (IMS) in environmental water. The parameters influencing the extraction efficiency such as sonication time, extraction solvent, extraction volume and salt concentration were investigated. Under the optimum conditions, enrichment factors was 170 and 150 with corresponding LOD of 8 and 12 μg/L for atrazine and simazine respectively . Linearity with a coefficient of estimation (r2) were >0.99 in the concentration level range of 15–1500 μg/L and 20–1700 μg/L for extraction of atrazine and simazine in water samples. The proposed method successfully was applied to screen of atrazine and simazine in environmental water.
Cultural History Studies Research journal of Iranian society of History, Oct 1, 2018
The objective of this study was to analize the Iran’s Political Problems from the Viewpoint of Fe... more The objective of this study was to analize the Iran’s Political Problems from the Viewpoint of Female Travelers in the Nasseri Era. Refering to the methodology: this research has been done by descriptive method and by studying written and historical works. Researchers have extracted material by examining historical books, articles and writings. In this study, we have tried to collect and sort out the problems of passengers. Results show that during Qajar Era, due to the strategic position of Iran and the Persian Gulf, this region was of particular interest to the superior international powers; therefore, travelers, statesmen, ambassadors, and merchants from many different European and non-European countries traveled to Iran. In these foreign delegations and political groups, there were also female figures, including Lady Sheil, Jane Dieulafoy, Gertrude Bell, Madame Wolfson, Isabella Bird Bishop and Carla Serena. Some of these women came to Iran as members of political delegations an...
3 Abstract: Providing house for various people in societies has become the main concerns for gove... more 3 Abstract: Providing house for various people in societies has become the main concerns for governance in countries. Iran as a country with the population growing and providing housing for this population has been one of the main concerns is government. In recent decade, Mehr housing project has been considered as serious policy by the government in Iran. The main objective of this project is providing housing for homeless people with priority to low-income strata. However, in this study the main purpose is determining functional status of Mehr housing project and assessing successful of project in Saqez. The research hypothesis is; Mehr housing project achieved to desired performance in Saqez. Statistical population of this study consisted of all Experts and managers in organization involved in with mehr housing projects in Saqez city (N= 300). Using Cochran's sampling formula, 169 people were selected as a sample. Respondents were selected by using Stratified random sampling ...
Study has been carried out on the analysis of the dynamic curving performance of coupled single-a... more Study has been carried out on the analysis of the dynamic curving performance of coupled single-axle bogies. Based on the static physical model for a bogie and the dynamic nonlinear model for a train, the optimum value of the couple stiffness is found and nonlinear curving performances are predicted with the variation of the key parameters.
Agricultural Engineering International Cigr Journal, Mar 23, 2015
A system was designed and fabricated to grade apple automatically based on its size using machine... more A system was designed and fabricated to grade apple automatically based on its size using machine vision. The system included several units to single out, orient and grade apple. A cylindrical container with a circular hole in its bottom, which was equipped with agitator, was built to single out the apples. This mechanism delivered apples to an orientation unit, one by one. Two wooden rails with a specific form which was located on the ramp via adequate slope were used to orient the apple during rolling. The apple was placed under the camera to take its photo, after orientation. The photo was transferred to computer for image processing to determine the apple grade based on its size. A belt conveyor carried the apple and set it in appropriate place regard to its grade. As a final point, wind spray valve was opened and the apple was pushed to the marked box. In order to assess the constructed system, 50 red and golden apples of each grade were chosen and the completely randomized design test was conducted. Results demonstrated that the most consumed time was related to image processing. Almost 85% of the apples were properly oriented in the orientation unit and were correctly graded. The overall system performance was satisfactory. Thus, the system can be consumed to grade apple automatically.
Materia Socio Medica, 2014
Introduction: Family physician is the increasing efforts to promote physician and other human res... more Introduction: Family physician is the increasing efforts to promote physician and other human resources in the health care systems. Goal: Investigate Human resources situation of the family physician program in six pilot cities in Khuzestan province in the southwest of Iran. Methods: A cross-sectional descriptive study was conducted to examine the family physician program in 2011. In this study, 15 healthcare teams in six pilot cities in Iran were assessed. Data was compiled from family physician officer document in vice treatment of Ahwaz University of medical sciences. National instructions of family physician was used to identify current gaps. Results: The survey findings indicated that there is a doctor's shortage about 36% in the health team that deployed in the first level of referral system. Also on the team, the 34% shortage of nurses and 60% shortages of nutrition personnel are seen. Specialists with offices in cities of second referral level, there have not welcomed the program. Conclusions: It seems that to facilitate patient access to physicians under contract with family physician program and the referral system in level two and level three, adopting arrangements to attract specialists and improving their maintenance is necessary.
Virus Genes, 2006
One hundred and twenty three cucurbit samples with one or more symptoms of leaf mosaic, leaf dist... more One hundred and twenty three cucurbit samples with one or more symptoms of leaf mosaic, leaf distortion, fruit mosaic, stunting, mottling and yellowing were collected from several locations in the northwest region of Iran. Screening by double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) with a cucumber mosaic virus (CMV) polyclonal antibody, produced positive reactions from 13 samples. However, none of these positive samples reacted with a CMV subgroup-II (S-II)-specific monoclonal antibody in a triple antibody sandwich (TAS)-ELSIA. When total RNA from the CMV-infected samples was subjected to reverse transcription polymerase chain reaction (RT-PCR) with a pair of primers corresponding to the flanking regions of the virus coat protein (CP) gene, an expected DNA fragment of about 872 bp was amplified from 10 of the 13 isolates. This fragment covered the CP open reading frame (ORF) plus 92 and 123 bp of the 5' and 3' flanking regions, respectively. Restriction analysis with MspI (HpaII) was done on 9 of the PCR products and revealed a previously described CMV subgroup I (S-I) specific profile (537 and 335 bp fragments) for the isolates B13, B23, B5, SH5, SH17, S342 and S337, and an additional fragment, suggestive of combined profiles, was present for B13, SH5 and S342. Two other isolates, SH12 and B7 had a CMV S-II MspI profile (four visible fragments and a predicted non-visible 28-bp fragment on 2% agarose). Also, BsuRI (HaeIII) did not cut the PCR products characteristic of the CMV S-I specific MspI profile, whereas for the S-II isolates, BsuRI gave two fragments with sizes of approximately 559 and 313 bp. Nucleotide (nt) sequences of clones from the isolates B13, B23, SH5, SH17, S337 and SH12 were determined and aligned with those of previously published CMV strains and isolates. Consensus parsimonious trees constructed on the basis of the whole amplified region (841 nt excluding the primer sequences), CP ORF (nt or deduced amino acid data), or either of the flanking regions confirmed the RFLP data so that B13, B23, S337, SH5 and SH17 were placed in the CMV S-IA subclade, and SH12 in the S-II Clade. These analyses showed that both CMV S-I and S-II variants occur in the northwest region of Iran although S-I variants appeared to have a higher incidence.
Journal of the Optical Society of America A, 2006
Reflection, transmission, and absorption of electromagnetic waves by periodic arrays of conductin... more Reflection, transmission, and absorption of electromagnetic waves by periodic arrays of conducting or dielectric rectangular cylinders are studied by a finite-difference time-domain technique. Truncated gratings made of lossless and lossy conducting and dielectric elements are considered. Results for surface current density, transmission, and reflection coefficients are calculated and compared with corresponding results in the literature, which are obtained by approximate or rigorous methods applicable only to idealized infinite models. An excellent agreement is observed in all cases, which demonstrates the accuracy and efficacy of our proposed analysis technique. Additionally, this numerical method easily analyzes practical gratings that contain a finite number of elements made of lossless, lossy, or even inhomogeneous materials. The results rapidly approach those for the idealized infinite arrays as the number of elements is increased. The method can also solve nested gratings, stacked gratings, and holographic gratings with little analytical or computational effort.
International Journal for Ion Mobility Spectrometry, 2016
Triazine herbicides and some of their transformation products are considered as one of the most i... more Triazine herbicides and some of their transformation products are considered as one of the most important classes of chemical pollutants owing to their widespread use and toxicity. Triazines and their degradation products have caused concern because they are toxic and persistent in water, soil, and organisms. The present paper describes the validation of ultrasound-assisted emulsification-microextraction (USAEME) method for determination of atrazine and simazine using ion mobility spectrometry (IMS) in environmental water. The parameters influencing the extraction efficiency such as sonication time, extraction solvent, extraction volume and salt concentration were investigated. Under the optimum conditions, enrichment factors was 170 and 150 with corresponding LOD of 8 and 12 μg/L for atrazine and simazine respectively . Linearity with a coefficient of estimation (r2) were >0.99 in the concentration level range of 15–1500 μg/L and 20–1700 μg/L for extraction of atrazine and simazine in water samples. The proposed method successfully was applied to screen of atrazine and simazine in environmental water.