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| 1 | 巴基斯坦地方地震台网的检测能力和可靠性分析显示文摘利用Bungum和Husebye的方法,分析了地方地震台网的检测能力和可靠性.用标准的计算机定位程序重新测定了地震位置.根据25年的地震记录,分别由震级-频度关系导出的50%、90%和100%的累积检测率估计了检测水平.对台网内地震,相应于100%检测率的震级下限为ML=1.7.用台网内固定的实际震源,研究了台网对震源位置的测定精度.对网内地震,震中测定误差小于4 km.最后讨论了台网连续工作时可能会遇到的影响检测能力的一些问题. | M.Qaisar T.Mahmood S.A.Khan 许忠淮 | 2003 | 地震学报2003，25，1： | 4 |
| 2 | 日粮中添加硒和维生素E对肉鸡免疫系统的影响显示文摘试验旨在研究有机硒、无机硒及维生素E对肉鸡免疫系统的影响。试验选用130只1日龄肉鸡分为3个组,其中A和B组为试验组,各60只鸡,C组为对照组,10只鸡。A组日粮中添加有机硒和维生素E,A组又细分为A1、A2、A3、A4、A5和A6组,其中有机硒的添加量分别为0.25、0.25、0.5、0.5、1.0和1.0 mg/kg,维生素E的添加量为0、200、0、200、0和200 IU/kg。B组日粮中添加无机硒和维生素E,也分为B1、B2、B3、B4、B5和B6组,其中无机硒的添加量分别为0.25、0.25、0.5、0.5、1.0和1.0 mg/kg,维生素E的添加量为0、200、0、200、0和200 IU/kg。C组为对照组,饲料中不添加硒和维生素E。检测指标包括新城疫病毒(HI)抗体滴度、免疫器官的病理变化、免疫器官指数和生长性能。试验结果表明,日粮中加入有机硒后,能提高肉鸡免疫力,效果优于添加无机硒;同时,硒与维生素E配合使用的效果优于单一添加硒。 | M.I.Hussain S.A.Khan Z.I.Chaudhary A.Aslam K.Ashraf M.F.Rai 黄鑫 戴晋军 李彪 谭斌 李春松 | 2013 | 饲料研究2013，36，3： | 2 |
| 3 | 苏门答腊-安达曼地震的GPS分析显示文摘2004年12月26日印度尼西亚苏门答腊地震是历史上破坏性最强的地震之一。此次地震的震级Mw=9.3(根据Stein和Okal以简正模式振幅修订,http://gffzz948686e0ea5b4085hou5wukk0qpwu69pf.ffgz.tsg.suse.edu.cn/people/seth/research/sumatra.html),是自1900年以来记录到的第二最大地震。它发生在苏门答腊岛北部以西100千米的近海处, | S.A.Khan O.Gudmundsson 左玉玲 郑需要 | 2005 | 世界地震译丛2005，36，1： | 1 |
| 4 | Damped Kadomtsev–Petviashvili Equation for Weakly Dissipative Solitons in Dense Relativistic Degenerate Plasmas显示文摘We have investigated the properties of three-dimensional electrostatic ion solitary structures in highly dense collisional plasma composed of ultra-relativistically degenerate electrons and non-relativistic degenerate ions. In the limit of low ion-neutral collision rate, we have derived a damped Kadomtsev–Petviashvili(KP) equation using perturbation analysis. Supplemented by vanishing boundary conditions, the time varying solution of damped KP equation leads to a weakly dissipative compressive soliton. The real frequency behavior and linear damping of solitary pulse due to ion-neutral collisions is discussed. In the presence of weak transverse perturbations, soliton evolution with damping parameter and plasma density is delineated pointing out the extent of propagation using typical parameters of dense plasma in the interior of white dwarfs. | S.Ahmad Ata-ur-Rahman S.A.Khan F.Hadi | 2017 | Communications in Theoretical Physics2017，67，12： | 0 |
| 5 | HLA-DQ and-DR alleles in patients with SLE:A tertiary hospital-based case–control study in Bangladesh显示文摘Background:Systemic lupus erythematosus(SLE)is a systemic autoimmune disease characterized by the involvement of multiple organs and autoantibody production.This study aimed to determine the association of human leukocyte antigen(HLA)-DQ and-DR alleles with SLE at a tertiary hospital in Bangladesh.Methods:This case-control study was conducted in the Department of Rheumatology,Bangabandhu Sheikh Mujib Medical University(BSMMU),Dhaka,Bangladesh.The patients who fulfilled the 1997 revised American College of Rheumatology classification criteria for SLE were considered cases(n=41).The controls(n=32)were selected from the hospital staff of BSMMU,including doctors and nurses who did not suffer from any known rheumatic diseases,and there was no such disease in their first-degree relatives.Polymerase chain reaction using a sequence-specific primer(PCRSSP)in a low-resolution typing method was carried out on blood samples collected for HLA-DQ and-DR allele typing.Results:The cases and controls had comparable mean ages(31 vs.32 years),and most cases were female(95.1%vs.34.4%).The most frequent clinical manifestations were mucocutaneous(85.4%),followed by musculoskeletal(70.7%)and constitutional symptoms(58.5%).The cases had a significantly higher frequency of HLA-DR2 allele compared with healthy controls(70.7%vs.43.8%;odds ratio:3.1;95%confidence interval:1.2-8.2).In addition,HLADQ6 allele was found to have a significant association with mucocutaneous manifestations of the cases(88.9%,P=0.03).Conclusions:Bangladeshi adults having HLA-DR2 may be more susceptible to SLE.HLA-DQ6 allele might be associated with mucocutaneous manifestations of SLE. | Muhammad S.A.Khan Shamim Ahmed Iftekhar H.Bandhan Farhana Zaman MdKamrul H.Sajib Shirin Tarafder Minhaj R.Choudhury Syed A.Haq Mohammad M.Zaman | 2023 | Rheumatology & Autoimmunity2023，3，1： | 0 |
| 6 | Complementary effect of zoo compost with mineral nitrogen fertilisation increases wheat yield and nutrition in a low-nutrient soil显示文摘Excess nitrogen(N) fertiliser use in agriculture is associated with water pollution and greenhouse gas emissions.While practices and programs to reduce N fertiliser application continue to be developed,inefficient fertiliser use persists.Practices that reduce mineral N fertiliser application are needed in a sustainable agricultural ecosystem to control leaching and gaseous losses for environmental management.This study evaluated whether fully or partially replacing mineral N fertiliser with zoo compost(Perth Zoo) could be a good mitigation strategy to reduce mineral N fertiliser application without affecting wheat yield and nutrition.To achieve this,a glasshouse experiment was conducted to assess the complementary effect of zoo compost and mineral N fertiliser on wheat yield and nutrition in a sandy soil of southwestern Australia.Additionally,a chlorophyll meter was used to determine whether there was a correlation between chlorophyll content and soil mineral N content,grain N uptake,and grain protein content at the tillering(42 d after sowing(DAS)) and heading(63 DAS) growth stages.The standard practice for N application for this soil type in this area,100 kg ha^(-1),was used with a soil bulk density of 1.3 g cm^(-3) to calculate the amount of mineral N(urea,46% N) and Perth Zoo compost(ZC)(0.69% N) for each treatment.Treatments comprised a control(no nutrients added,T1),mineral N only(100 kg N ha^(-1),T2),ZC only(100 kg N ha^(-1),T7),and combinations of mineral N and ZC at different rates(mineral N at 100 kg N ha^(-1)+ ZC at 25 kg N ha^(-1)(T3),mineral N at 75 kg N ha^(-1)+ ZC at 25 kg N ha^(-1)(T4),mineral N at 75 kg N ha^(-1)+ ZC at 50 kg N ha^(-1)(T5),and mineral N at 50 kg N ha^(-1)+ ZC at 50 kg N ha^(-1)(T6)).The T6 treatment significantly increased grain yield(by 26%) relative to the T2 treatment.However,the T7 treatment did not affect grain yield when compared to the T2 treatment.All treatments with mineral N and ZC in combination significantly improved the 1 000-grain weight compared to the T2 treatment.Chlorophyll content was better correlated with soil mineral N content(r = 0.61),grain N uptake(r = 0.62),and grain protein content(r = 0.80) at heading(63 DAS) than at tillering(42 DAS).While ZC alone could not serve as an alternative to mineral N fertiliser,its complementary use could reduce the mineral N fertiliser requirement by up to 50% for wheat without compromising grain yield,which needs to be verified in the field.Chlorophyll content could be used to predict soil mineral N at the heading stage,and further studies are warranted to verify its accuracy in the field.Overall,the application of ZC as part of integrated nutrient management improved crop yield with reduced N fertiliser application. | Muhammad S.A.KHAN Lynette K.ABBOTT Zakaria M.SOLAIMAN Peter R.MAWSON Ian S.WAITE Sasha N.JENKINS | 2022 | Pedosphere2022，32，2： | 0 |
| 7 | Propagation of Ion Solitary Pulses in Dense Astrophysical Electron-Positron-Ion Magnetoplasmas显示文摘In this paper,we theoretically investigate the existence and propagation of low amplitude nonlinear ion waves in a dense plasma under the influence of a strong magnetic field.The plasma consists of ultra-relativistic and degenerate electrons and positrons and non-degenerate cold ions.Firstly,the appearance of two distinct linear modes and their evolution is studied by deriving a dispersion equation with the aid of Fourier analysis.Secondly,the dynamics of low amplitude ion solitary structures is investigated via a Korteweg-de Vries equation derived by employing a reductive perturbation method.The effects of various plasma parameters like positron concentration,strength of magnetic field,obliqueness of field,etc.,are discussed in detail.At the end,analytical results are supplemented through numerical analysis by using typical representative parameters consistent with degenerate and ultra-relativistic magnetoplasmas of astrophysical regimes. | ATA-UR-RAHMAN S.A.KHAN A.QAMAR | 2015 | Plasma Science and Technology2015，17，12： | 0 |
| 8 | Human leukocyte antigen B polymorphism and association between HLA-B27 and endoplasmic reticulum aminopeptidase 1 rs30187 SNP in patients with ankylosing spondylitis in Bangladesh显示文摘Objectives:To determine the association of Human leukocyte antigen B(HLA‑B)alleles with ankylosing spondylitis and the allelic association of HLAB27 with endoplasmic reticulum aminopeptidase 1(ERAP1)single-nucleotide polymorphism(SNP)rs30187 in patients with ankylosing spondylitis(AS).Methods:We studied 48 consecutively enrolled well-defined AS patients and 48 healthy controls recruited from the outpatient clinic of the rheumatology department of Bangabandhu Sheikh Mujib Medical University(BSMMU),Dhaka,Bangladesh.To genotype HLA-B alleles from peripheral blood DNA,we designed sequence-specific primers for polymerase chain reaction.Sanger's sequencing method was used to detect the ERAP1 rs30187 SNP.The HLA-B allele distributions were compared between cases and controls.To infer an allelic association between HLA-B27 and ERAP1,allele distributions from both loci were compared using cross-tabulations.Chi-squared test or Fisher's exact test was used to quantify the association,and their strength of association was tested by odds ratio(OR)with 95%confidence interval(CI).Results:The frequency of HLA-B27 was found to be higher in AS patients(60.4%)than in healthy controls(8.3%).HLA-B27 allele had an OR of 16.8(95%CI=5.2–54.4)for the development of AS.Overall,4%of AS patients had both HLA-B27 and HLA-B40.No significant association was found between ERAP1 rs30187 SNP and HLA-B27 in patients with AS(OR=1.7,95%CI=0.5–5.6).Conclusions:HLA-B27 was significantly associated with AS in patients in Bangladesh.However,no association between ERAP1 rs30187 SNP and HLA-B27 was observed. | Md Kamrul H.Sajib Shamim Ahmed Syed A.Haq Minhaj R.Choudhury Mohammed Uddin Furkan Uddin Muhammad S.A.Khan Mohammad M.Zaman | 2022 | Rheumatology & Autoimmunity2022，2，1： | 0 |
| 9 | Shocks and Solitons in Ultradense Degenerate Electron-Positron-Ion Plasmas显示文摘震动和 solitons 的形成和繁殖被雇用 Thomas 费密模型在 unmagnetized,包含电子和正电子的退化费密气体的 ultradense 血浆,和古典离子气体调查。为这个目的,一个使变形的 Korteweg-de Vries 冰山(dKdVB ) 方程为冷、断热、等温的离子用减少的 perturbative 技术被导出。在平面几何学的 dKdVB 方程的局部性的分析答案为分散以及驱散被获得主导的案例。为 nonplanar (圆柱、球形) 几何学,改变 dKdVB 方程的数字冲击波答案的时间被发现。它导致 soliton 答案的主导的大小写也是的分散讨论了。离子温度,正电子集中和驱散的效果在这些非线性的结构上被发现重要。到科学兴趣的系统的结果的关联被指出。 | S.A.Khan Arshad M.Mirza | 2011 | Communications in Theoretical Physics2011，55，1： | 0 |
| 10 | Coherent nonlinear structures in dense electron positron plasma显示文摘It is shown that rarefactive-type double layer structures exist in ultradense electron-positron plasma.For this purpose,an extended Korteweg de Vries equation is derived and solved analytically in the low amplitude limit by employing the appropriate fluid equations.A strong influence of quantum degeneracy pressure of electrons and positrons,quantum diffraction effects and concentration of background positive ions on double layer is noticed.It is also pointed out that the amplitude and steepness of the double layer increases with an increase in ion concentration or ion charge number.The results are examined numerically for some interesting cases of dense plasmas with illustrations. | S.A.Khan Z.Wazir | 2013 | Chinese Physics B2013，22，2： | 0 |
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