The Role of Peroral Cholangioscopy in Evaluating Indeterminate Biliary Strictures

Nasim Parsa,Mouen A. Khashab 대한소화기내시경학회 2019 Clinical Endoscopy Vol.52 No.6

Biliary strictures are considered indeterminate when the initial radiologic evaluation and endoscopic retrogradecholangiopancreatography with brush cytology and/or forceps biopsy do not reveal diagnostic findings. Evaluation of these stricturesis challenging and often requires a multidisciplinary approach and multiple procedures. Peroral cholangioscopy allows directvisualization of these lesions and targeted tissue acquisition using miniature biopsy forceps. In the past decade, there have beensignificant improvements in the field of cholangioscopy. These advances have allowed higher-quality image acquisition, easy setup,operation by a single operator, easy maneuverability, and excellent targeted tissue sampling performance. However, the interpretationof cholangioscopic visual findings remains challenging. In this review, we discuss the role of peroral cholangioscopy in the evaluation ofindeterminate biliary strictures.

Promoting Fairness in EFL Writing Assessment: Are There Any Effects of the Writers’ Awareness of the Rating Criteria?

Nasim Ghanbari 아시아테플 2019 The Journal of Asia TEFL Vol.16 No.2

Soil water content distribution mapping using an automatic monitoring system

( Nasim Reza ),( Eliezel Habineza ),( Rejaul Karim ),( Mohammod Ali ),( Shaha Nur Kabir ),( Young Yoon Jang ),( Sun-ok Chung ) 한국농업기계학회 2023 한국농업기계학회 학술발표논문집 Vol.28 No.1

Soil water content plays a crucial role in plant growth, irrigation scheduling, and soil erosion prediction. Automatic sensor-based monitoring systems have emerged as efficient tools to provide continuous soil water content mapping against the traditional method, which is time consuming and limited to single point measurement. This study aimed to develop a sensor-based monitoring system for real-time mapping of soil water content distribution. To assess the variability of soil water content in sandy soil, a soil test bin of 3 m by 3 m was constructed. The system consisted of a series of sensors (SEN0193) installed at different depths, ranging from 0 to 60 cm. The monitoring system was equipped with wireless transmission technology using Arduino Mega 2560 and Raspberry Pi 4B microcontroller. Water content sensors were placed at predetermined locations and the geographic coordinates were obtained using GPS. The microcontroller collected data from the sensors, which was then evaluated using GIS to prepare a map of the soil moisture distribution. The results suggested that the monitoring system had the potential to revolutionize soil water content mapping and monitoring. The system can provide valuable insights into the spatial and temporal variations of soil water content, which can inform irrigation scheduling, crop management, and soil conservation practices.

LoRa-based video data transmission for real-time monitoring of pig farm

( Nasim Reza ),( Shahriar Ahmed ),( Sumaiya Islam ),( Shaha Nur Kabir ),( Minho Song ),( Gookhwan Kim ),( Sun-ok Chung ) 한국농업기계학회 2023 한국농업기계학회 학술발표논문집 Vol.28 No.1

This paper proposed a LoRa-based video data transmission system for real-time monitoring in a pig farm. This approach eliminates the need for complex and costly infrastructure, making it a cost-effective solution for real-time monitoring in pig farm. The system architecture included the Raspberry Pi 4B microcontroller, RGB cameras, LoRa transceivers, gateway, and cloud-based platform for data analysis and visualization. The video data was captured using the RGB cameras and stored into an external memory through the microcontroller. Then the video was segmented into small chunks and compressed as an H.265 codec, which reduced the size of the video data and made it easier to transmit using the LoRa. Each compressed video chunk was then sent by the LoRa transceiver with a low data rate and a low transmit power. This allows the transmission to reach long distances, while consuming very low power levels. At the receiving end, the video chunks were received by another LoRa transceiver and re-assembled into the original video stream. The system performance was evaluated through a series of tests, including transmission range, video quality, and power consumption. The results showed that the LoRa-based system could transmit video data over a long range (2 km) with low power consumption (less than 1 W), while maintaining good video quality (720p resolution). The findings showed a great potential for real-time monitoring in pig farms, providing valuable insights into the pigs behavior, health, and productivity.

Impact of Nitrogen and Plant Growth Promoting Rhizobacteria on Yield and Yield Components of Sunflower in a Glasshouse Environment

Nasim, Wajid,Bano, Asghari 한국작물학회 2012 Journal of crop science and biotechnology Vol.15 No.4

The effects of Nitrogen (N) and Plant Growth Promoting Rhizobacteria (PGPR) on growth and development of sunflower (Helianthus annuus L. var. Hysun-33) grown in the greenhouse under a natural environment were studied. The N-use efficiency of a sunflower crop grown under three N rates ($N_1=0kg\;ha^{-1}$, $N_2=120kg\;ha^{-1}$, and $N_3=240kg\;ha^{-1}$) and three PGPR levels ($R_1=0kg\;ha^{-1}$, $R_2=30kg\;ha^{-1}$, and $R_3=60kg\;ha^{-1}$) were investigated. The maximum amount of N resulted in higher total dry matter production per plant and the effect was prominent from 34 days after sowing (DAS). Seed yields differed significantly among different sunflower crops especially at limiting N supply, with significant shifts according to the N level. N uptake was an important parameter for yield at all N rates. The 240 kg N $ha^{-1}$ treatments provided the maximum yield, while the oil contents in these treatments of higher yield showed a lower oil content (%). Harvest index was also significantly correlated to yield across N rates; however, its importance depended much on environmental conditions as well. It can be inferred from the study that sunflower crop is well-supplied with respect to growth, development, yield and yield components, to enhance N efficiency and depends very much on the N supply. All the parameters gave maximum results with the increment of N while PGPR regimes had no prominent impact on the sunflower crop, the target environment, and the target yield level grown under a specified controlled glasshouse environment.

The effect of functionalized SiO2 nanoparticles on the morphology and triazines separation properties of cellulose acetate membranes

Nasim Rakhshan,Majid Pakizeh 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.34 No.-

This study investigates the removal of triazines from an aqueous solution using a novel SiO2/CAnanocomposite membrane. The membranes were fabricated with phase inversion by dispersing SiO2nanoparticles in the CA casting solutions in the range of 0.01–0.1 wt.%. ATR-IR, FESEM, AFM, and contactangle analyses were employed to characterize the prepared membranes. The effect of silicananoparticles on the performance of membranes was studied through the pure water flux and MgSO4rejection obtained at an applied pressure of 10 bars. Nanocomposite CA membranes generally showedhigher salt rejection and experienced less flux than neat CA membranes, due to morphology changes. Inaddition, the observed salt rejection tended to enhance as silica loading increased up to a criticalconcentration. Three triazines (atrazine, propazine, and prometryn) were removed from water by theprepared membranes, and their rejections were compared. The results showed that the triazinesrejection was increased by pressure and feed concentration. The effects of the molecules’ properties,including molecular size, hydrophobicity and dipole moment, were studied. The results revealed that therejection of prometryn with a larger molecular size was always higher than the other two triazines. Itwas observed that there was a direct relation between dipole moment and triazine rejection, while thisrelation was not observed in the case of hydrophobicity.

Investigating the possibility of increasing the microbial and oxidative stability of silver carp burgers using hydrolyzed protein of watermelon seeds

Nasim Mahdavi Mighan,Peiman Ariaii,Mahdi Sharifi Soltani,Sara Jafarian 한국식품과학회 2024 Food Science and Biotechnology Vol.33 No.2

In this study, watermelon seeds (Citrullus lanatus) protein hydrolyzed (WSPH) was produced using microbial enzymes Alcalase and Protamex. Then, the effect of different concentrations of WSPH (0, 1, 2, and 3%) on the quality of the silver carp (Hypophthalmichthys molitrix) burger during refrigerated storage (4 ± 1 °C) was investigated. According to the results, WSPH by alcalase had significantly higher degree of hydrolysis and antioxidant activity (p < 0.05) and it was used for burger tests. The results showed that, the addition of WSPH was able to reduce the microbial, chemical spoilage and sensory score during 16 days compared to the control, and with increasing the concentration of WSPH, better results were observed (p < 0.05). According to the chemical, microbial and sensory indicators, WSPH at 3% could increase the shelf life of fish burgers up to 8 days compared to the control, and this treatment was within the permissible quality limit until the end of the refrigerated storage.

Evaluation of Related Risk Factors in Number of Musculoskeletal Disorders Among Carpet Weavers in Iran

Nasim Karimi,Abbas Moghimbeigi,Majid Motamedzade,Ghodratollah Roshanaei 한국산업안전보건공단 산업안전보건연구원 2016 Safety and health at work Vol.7 No.4

Background: Musculoskeletal disorders (MSDs) are a common problem among carpet weavers. This study was undertaken to introduce affecting personal and occupational factors in developing the number of MSDs among carpet weavers. Methods: A cross-sectional study was performed among 862 weavers in seven towns with regard to workhouse location in urban or rural regions. Data were collected by using questionnaires that contain personal, workplace, and information tools and the modified Nordic MSDs questionnaire. Statistical analysis was performed by applying Poisson and negative binomial mixed models using a full Bayesian hierarchical approach. The deviance information criterion was used for comparison between models and model selection. Results: The majority of weavers (72%) were female and carpet weaving was the main job of 85.2% of workers. The negative binomial mixed model with lowest deviance information criterion was selected as the best model. The criteria showed the convergence of chains. Based on 95% Bayesian credible interval, the main job and weaving type variables statistically affected the number of MSDs, but variables age, sex, weaving comb, work experience, and carpet weaving looms were not significant. Conclusion: According to the results of this study, it can be concluded that occupational factors are associated with the number of MSDs developing among carpet weavers. Thus, using standard tools and decreasing hours of work per day can reduce frequency of MSDs among carpet weavers.

Cyclic variations of gonad development of an air-breathing fish, Channa striata in the lentic and lotic environments

Nasim Al Mahmud,Hassan Md. Hafizur Rahman,Golam Mohammod Mostakim,Mohd. Golam Quader Khan,Md. Shahjahan,Nahid Sultana Lucky,M. Sadiqul Islam 한국수산과학회 2016 Fisheries and Aquatic Sciences Vol.19 No.1

The study was conducted to know the cyclic changes in gonadal maturation and to investigate the developmental stages of oocytes and testicular germ cells of an air-breathing fish, Channa striata. Fish were sampled monthly from lentic and lotic environments of three geographical locations of Bangladesh from December to November and the histological analysis of their gonad was done to evaluate the objectives. The highest mean GSI was 5.95 ± 0.20 for female in July and 0.14 ± 0.01 for male also in July showing that the gonadal development reached its peak during this month. The highest mean oocyte diameter was 1257.50 ± 24.17 μm observed in July implying that the oocyte reached maturity in this month. Histological study of ovary revealed the evidence of early yolk granule stage and late yolk granule stage from April to July. In case of male four stages of spermatogenesis were distinguished and spermatozoa were highly abundant in June and July. So the monthly pooled values of GSI and the analysis of gonadal histology indicated that the peak breeding season of C. striata occurred in July in the lentic and lotic environments. Samples collected from lentic and lotic habitats are suggestive of no difference in the development of the gonad. The results of the present study will be useful for selective breeding programme, conservation and sustainable fishery management of C. striata in its natural habitat.

Seismic response evaluation of concentrically rocking zipper braced frames

Nasim Irani Sarand,Abdolrahim Jalali 국제구조공학회 2020 Structural Engineering and Mechanics, An Int'l Jou Vol.73 No.3

In this study an innovative rocking zipper braced frame (RZBF) is proposed to overcome the deficiencies of common concentrically braced frames. RZBF is an improved rocking concentrically braced frame which is based on combination of rocking behavior and zipper columns. The base rocking joints and post-tensioned bars provide rocking response and restoring force, respectively. Also, zipper columns distribute the unbalance force over the frame height and reduce the damage concentration. To evaluate seismic performance of RZBF, a comparison study is carried out considering concentrically braced frame, zipper braced frame, rocking concentrically braced frame and RZBF. Thereby, a suite of non-linear time history analyses had been performed on four different types of archetypes with four, six, eight, ten and twelve stories. Frames were designed and non-linear time history analyses were conducted in OpenSees. To compare the seismic behavior of the archetypes, roof drifts, residual roof drifts, story drifts, the forces of first and top story braces, PT bars forces, column uplift and base shears were taken in to consideration. Results illustrate that using RZBF, can reduce the damage due to reduced residual drifts. Zipper columns enhance the seismic performance of rocking systems. As the number of stories increase in the RZBF systems, larger top story braces were needed. So the RZBF system is applicable on low and midrise buildings.