检索结果-南通市图书馆

Frequency of Uveitis among Juvenile Idiopathic Arthritis Patients in a Tertiary Care Hospital of Bangladesh: A Retrospective Study

引用

Open Journal of Rheumatology and Autoimmune Diseases 2024年第3期14卷 144-156页

作者： Md. Asif Ali Mujammel Haque Kamrul Laila mohammad Hafiz Al-mamun Mohammed Mahbubul Islam mohammad Imnul Islam Manik Kumar Talukder Pediatric Rheumatology Division Department of Pediatrics Bangabandhu Sheikh Mujib Medical University Dhaka Bangladesh

Background: Juvenile idiopathic arthritis (JIA) is the most frequently encountered pediatric rheumatologic disorder with an unknown etiology. At present there is no published data regarding the frequency of uveitis in patients with JIA in Bangladesh. This study aimed to observe the frequency of JIA-associated uveitis (JIAU) and distribution of uveitis among different sub-categories of JIA at the Pediatric Rheumatology division, both outdoor and indoor patients, Department of Pediatrics, Bangabandhu Sheikh Mujib Medical University (BSMMU) in Bangladesh. Methods: This was a retrospective study of 1784 JIA patients at the Pediatric Rheumatology division, BSMMU from July 2010 to March 2023. Results: Among the 1784 enrolled JIA patients, we observed that 0.73% of cases had uveitis. Here, 61.5% of JIAU cases were male. Most of the cases (92.3%) had bilateral uveitis and only 7.7% cases had unilateral uveitis. Among JIAU patients, the majority were Oligo JIA (53.8%), followed by ERA 30.8%, Poly JIA RF(−) 7.7% and Systemic JIA 7.7% cases respectively. This study also revealed that 15.4% of JIAU patients had ANA positivity and 23% had HLA B-27 positivity. Here we also found ocular complications associated with uveitis such as band keratopathy (23.1%), posterior synechiae (15.4%) and cataract (15.4%). Conclusions: In this study, we observed only 0.73% of patients of JIA had developed uveitis which is lower than the frequency observed in other European studies. This study also showed various ocular complications amongst JIA-associated uveitis patients which signifies the importance of adherence to periodic ophthalmological follow-up to prevent these ocular complications.

关键词： JIA Uveitis HLA-B27 ANA BSMMU

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Investigating ionic liquids for optimizing lithium metal anode

引用

Green Energy & Environment 2022年第2期7卷 173-175页

作者： Lei Zhang mohammad Al-mamun Centre for Clean Environment and Energy Griffith UniversityGold Coast CampusGold CoastQLD 4222Australia

Developing renewable energy technology is an effective way to address the global warming and air pollution problems derived from depleting fossil *** to the high theoretical capacity(3860 m Ah g-1) and low electrochemical potential of lithium metal anode,lithium metal batteries(LMBs) have attracted tremendous research attention with the scalable application and vigorous deployment of electric ***,the further commercialization of Li metal anode is hindered by the random growth of Li dendrites during the lithium plating/stripping processes,leading to the continuous consumption of active Li and the puncture on the *** recently,Ma’s group proposed a new approach to systematically investigate the relationship between functional groups and Li dendrite generation during the Li plating/stripping *** proposed new approach could be of an effective tool to gain new insights into functional groups in the electrolyte additives and Li dendrites formation,highly valuable for the rational structural design of highperformance Li metal electrode materials.

关键词： lithium stripping electrolyte

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Sources and Ecological Risks of Heavy Metals in Soils Under Different Land Uses in Bangladesh

引用

Pedosphere 2019年第5期29卷 665-675页

作者： mohammad Saiful ISLAM mohammad Kawser AHMED mohammad Habibullah AL-mamun Shah mohammad Asraful ISLAM Department of Soil Science Patuakhali Science and Technology UniversityDumkiPatuakhali 8602 (Bangladesh) Environment and Information Sciences Yokohama National UniversityYokohama 240-8501 (Japan) Department of Oceanography University of DhakaDhaka 1000 (Bangladesh) Department of Fisheries University of DhakaDhaka 1000 (Bangladesh) Department of Plant Pathology Patuakhali Science and Technology UniversityDumkiPatuakhali 8602 (Bangladesh)

Soil heavy metal pollution, influenced by both natural and anthropogenic factors, significantly reduces environmental quality. In this study, Cr, Ni, Cu, As, Cd, and Pb in eight different land-use soils from Patuakhali District in Bangladesh were assessed. Concentrations of Cr, Ni, Cu, As, Cd, and Pb in soils were 1-87, 5-271, 4-181, 0-80, 0.2-24.0, and 5-276 mg kg-1, respectively, measured using an inductively coupled plasma-mass spectrometer. The enrichment factor, pollution load index (PLI), and contamination factor (CJ) of metal i were used to assess the ecological risk posed by metals in soils. The PLI ranged from 0.78 to 2.66, indicating baseline levels to progressive deterioration of soil due to metal contamination. However, C;of Cd ranged from 1.8 to 12.0, which showed that the studied soils were strongly impacted by Cd. Considering the severity of the potential ecological risk of a single metal, the descending order was Cd > As > Pb > Cu > Ni > Cr. Soils under all land uses showed moderate to very high potential ecological risk.

关键词： Cd contamination factor degree of contamination enrichment factor environmental quality pollution load index soil deterioration soil pollution

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Vortices within the Separation Region in a Decelerating Channel Flow (Effect of Inlet Velocity Gradient)

引用

Journal of Thermal Science 2005年第4期14卷 341-345页

作者： Yoichi KINOUE Toshiaki SETOGUCHI mohammad mamun Norimasa SHIOMI Kenji KANEKO Department of Mechanical Engineering Saga University1HonjoSaga840-8502Japan

An experimental investigation was made into three-dimensional separated flow and the vortices within the flow separation in a decelerating channel flow generated by the suction from a porous side wall. The flows along the side and bottom walls were visualized by the surface tuft method. The turbulent internal flow was measured by the split-film probe to investigate the turbulent flow including the reverse flow. In the flow visualization for the strong decelerating flow （the suction flow ratio：0.8）, two typical flow patterns appear alternatively. One is that the flow near the bottom wall separates more upstream than the flow near the top wall and a clockwise vortex can be seen in the separation region. Another is the reversal flow pattern with a counterclockwise vortex. By the turbulent flow measurement using the split-film probe, two peaks of turbulence level are observed for the strong decelerating flow case. These peaks can be related with two flow patterns mentioned above.

关键词： vortices within the separation decelerating channel flow turbulent flow split-film probe

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

La_(1-x)Ca_xMn_(1-y)Al_yO_3 perovskites as efficient catalysts for two-step thermochemical water splitting in conjunction with exceptional hydrogen yields

引用

Chinese Journal of Catalysis 2017年第6期38卷 1079-1086页

作者： Lulu Wang mohammad Al‐mamun Porun Liu Yun Wang Hua Gui Yang Huijun Zhao Centre for Clean Environment and Energy Griffith University Gold Coast Campus QLD 4222 Australia Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China Centre for Environmental and Energy Nanomaterials Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031 Anhui China

Solar‐driven thermochemical water splitting represents one efficient route to the generation of H2as a clean and renewable *** to their outstanding catalytic abilities and promising solar fuel production capacities,perovskite‐type redox catalysts have attracted significant attention in this *** the present study,the perovskite series La1‐xCaxMn1‐yAlyO3(x,y=0.2,0.4,0.6,or0.8)was fabricated using a modified Pechini method and comprehensively investigated to determine the applicability of these materials to solar H2production via two‐step thermochemical water *** thermochemical redox behaviors of these perovskites were optimized by doping at either the A(Ca)or B(Al)sites over a broad range of substitution values,*** this doping,a highly efficient perovskite(La0.6Ca0.4Mn0.6Al0.4O3)was developed,which yielded a remarkable H2production rate of429μmol/g during two‐step thermochemical H2O splitting,going between1400and1000°***,the performance of the optimized perovskite was found to be eight times higher than that of the benchmark catalyst CeO2under the same experimental ***,these perovskites also showed impressive catalytic stability during two‐step thermochemical cycling *** newly developed La1‐xCaxMn1‐yAlyO3redox catalysts appear to have great potential for future practical applications in thermochemical solar fuel production.

关键词： Two‐step thermochemical route Water splitting Solar fuel Perovskite‐type redox catalyst Hydrogen production

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Three Dimensional Separation with Spiral-Focus in a Decelerating Duct Flow (Effect of Asymmetric Inlet Boundary Layer Thickness)

引用

Journal of Thermal Science 2003年第1期12卷 27-32页

作者： Yoichi Kinoue Toshiaki Setoguchi Kenji Kaneko mamun mohammad Masahiro Inoue Department of Mechanical Engineering Saga University 1Department of Mechanical Engineering Saga University 1Department of Mechanical Engineering Saga University 1Department of Mechanical Engineering Saga University 1Department Honjo Saga 840-8502 Japan Honjo Saga 840-8502 Japan Honjo Saga 840-8502 Japan Honjo Saga 840-8502 Japanof Mechanical Engineering Science Kyushu University 6-10-1Hakozaki Higashi-ku Fukuoka 812-8581Japan

An experimental apparatus was developed to study the three dimensional separated flow with spiral-foci. The internal decelerating flow was generated by the air suction from a side wall to produce the separation on an opposite-side wall. The relation between the upstream boundary layer and the generation of spiral-foci in the separation region was observed by a tuft method. As a result, it was clarified that the spiral-focus type separation could be produced on the side wall and its behavior was closely related to the vortices supplied into the separation region from the boundary layer developing along top wall or bottom one.

关键词： three dimensional separation spiral-focus decelerating duct flow.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Enhanced Thermochemical H_2 Production on Ca-Doped Lanthanum Manganite Perovskites Through Optimizing the Dopant Level and Re-oxidation Temperature

引用

Acta Metallurgica Sinica(English Letters) 2018年第4期31卷 431-439页

作者： Lulu Wang mohammad Al-mamun Porun Liu Yu Lin Zhong Yun Wang Hua Gui Yang Huijun Zhao Centre for Clean Environment and Energy Gold Coast Campus Griffith University Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and EngineeringEast China University of Science and Technology Centre for Environmental and Energy Nanomaterials Institute of Solid State Physics Chinese Academy of Sciences

Perovskite material is one of the promising classes of redox catalysts for hydrogen production through two-step ther-mochemical H20 ***,an analogue of La1-xCaxMnO3 perovskite was systematically investigated as a catalyst for thermochemical H2 *** Ca doping level（x = 0.2,0.4,0.6,0.8）and re-oxidation temperature were com-prehensively optimized for the improvement of catalytic *** to our experimental results,La0.6-Ca0.4MnO3 perovskite displayed the highest yield of H2 at the re-oxidation temperature of 900℃ and the obtained H2 production was -10 times higher than that of the benchmark ceria catalyst under the same experimental *** importantly,Lao.6Ca0.4MnO3 perovskite catalyst exhibited impressive cyclic stability in repetitive O2 and H2 test.

关键词： Thermochemical water splitting Hydrogen production Perovskite oxides Dopant level Re-oxidationtemperature

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Converting Co^(2+)-impregnated g-C_(3)N_(4) into N-doped CNTs-confined Co nanoparticles for efficient hydrogenation rearrangement reactions of furanic aldehydes

引用

Nano Research 2021年第8期14卷 2846-2852页

作者： Dongdong Wang mohammad Al-mamun Wanbing Gong Yang Lv Chun Chen Yue Lin Guozhong Wang Haimin Zhang Huijun Zhao Key Laboratory Centre for Environmental and Energy NanomaterialsAnhui Key Laboratory of Nanomaterials and NanotechnologyCAS Centre for Excellence in NanoscienceInstitute of Solid State PhysicsChinese Academy of SciencesHefei 230031China University of Science and Technology of China Hefei 230026China Centre for Clean Environment and Energy Gold Coast CampusGriffith UniversityQueensland 4222Australia Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China

The cyclopentanone and derivatives are a class of crucial fine chemicals for various industries and currently produced by conventional petrochemical synthetic ***,we demonstrated a new synthetic approach to directly fabricate N-doped carbon nanotube(N-CNTs)networks with confined Co nanoparticles from Co^(2+)-impregnated bulk g-C_(3)N_(4) as high performance hydrogenation rearrangement(HR)catalyst to efficiently convert a wide spectrum of biomass-derived furanic aldehydes to the corresponding cyclopentanones in water under a record-low H2 pressure of 0.5 MPa and mild *** unveiled a Co-catalysed bulk g-C_(3)N_(4) decomposition/carbonisation CNTs formation mechanism.A new HR pathway was also unveiled.

关键词： g-C_(3)N_(4) Co nanoparticles carbon nanotubes hydrogenation rearrangement furanic aldehydes

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Forecasting COVID-19 situation in Bangladesh

引用

Biosafety and Health 2022年第1期4卷 6-10页

作者： Mossamet Kamrun Nesa Md.Rashed Babu mohammad Tareq mamun Khan Department of Statistics Shahjalal University of Science and TechnologySylhet 3114Bangladesh Moulvibazar Government Women College Moulvibazar 3203Bangladesh

Forecasting the COVID‐19 confirmed cases,deaths,and recoveries demands time to know the severity of the novel *** research aims to predict all types of COVID‐19 cases(verified people,deaths,and recoveries)from the deadliest 3rd wave data of the COVID‐19 pandemic in *** used the official website of the Directorate General of Health Services as our data *** identify and predict the upcoming trends of the COVID‐19 situation of Bangladesh,we fit the Auto‐Regressive Integrated Moving Average(ARIMA)model on the data from Mar.01,2021 to Jul.31,*** finding of the ARIMA model(forecast model)reveals that infected,deaths,and recoveries number will have experienced exponential growth in Bangladesh to October *** model reports that confirmed cases and deaths will escalate by four times,and the recoveries will improve by five times at a later point in October 2021 if the trend of the three scenarios of COVID‐19 from March to July *** prediction of the COVID‐19 scenario for the next three months is very frightening in Bangladesh,so the strategic planner and field‐level personnel need to search for suitable policies and strategies and adopt these for controlling the mass transmission of the virus.

关键词： COVID‐19 ARIMA model Forecast Confirmed cases Deaths Recoveries

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Carbon-encapsulated heazlewoodite nanoparticles as highly efficient and durable electrocatalysts for oxygen evolution reactions

引用

Nano Research 2017年第10期10卷 3522-3533页

作者： mohammad Al-mamun Huajie Yin Porun Liu Xintai Su Haimin Zhang Huagui Yang Dan Wang Zhiyong Tang Yun Wang Huijun Zhao Centre for Clean Environment and Energy Griffith University Gold Coast Campus QLD 4222 Austrafia Ministry Key Laboratory of Oil and Gas Fine Chemicals College of Chemistry and Chemical Engineering Xinjiang University Urumqi 830046 China Centre for Environmental and Energy Nanomaterials Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031 China

The activity and durability of electrocatalysts are important factors in their practical applications, such as electrocatalytic oxygen evolution reactions （OERs） used in water splitting cells and metal-air batteries. In this study, a novel electrocatalyst, comprising few-layered graphitic carbon （-5 atomic layers） encapsulated heazlewoodite （Ni3S2@C） nanoparticles （NPs）, was designed and synthesized using a one-step solid phase pyrolysis method. In the OER test, the Ni3S2@C catalyst exhibited an overpotential of 298 mV at a current density of 10 mA·cm^-2, a Tafel slope of 51.3 mV·dec^-1, and charge transfer resistance of 22.0 Ω, which were better than those of benchmark RuO2 and most nickel- sulfide-based catalysts previously reported. This improved performance was ascribed to the high electronic conductivity of the graphitic carbon encapsulating layers. Moreover, the encapsulation of graphitic carbon layers provided superb stability without noticeable oxidation or depletion of Ni3S2 NPs within the nanocomposite. Therefore, the strategy introduced in this work can benefit the development of highly stable metal sulfide electrocatalysts for energy conversion and storage applications, without sacrificing electrocatalytic activity.

关键词： heazlewoodite electrocatalyst encapsulation oxygen evolution reaction pyrolysis graphitic carbon

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：