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A m.dified Precondition in the Gauss-Seidel m.thod

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Advances in Linear Algebra & m.trix Theory 2012年第3期2卷 31-37页

作者： Alim.ham.ad Nazari Sajjad zia Borujeni Departm.nt of m.them.tics Faculty of Science Arak University Arak Iran

In recent years, a num.er of preconditioners have been applied to solve the linear system. with Gauss-Seidel m.thod (see [1-7,10-12,14-16]). In this paper we use Sl instead of (S + Sm. and com.are with m. m.rim.to’s precondition [3] and H. Niki’s precondition [5] to obtain better convergence rate. A num.rical exam.le is given which shows the preference of our m.thod.

关键词： Preconditioning Gauss-Seidel m.thod regular Splitting Z-m.trix Nonnegative m.trix

m.crowave-assisted pre-ionization experim.nts on GLAST-Ⅲ

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Plasm. Science and Technology 2021年第8期23卷 53-61页

作者： riaz KHAN Sehrish SHAKIr Ahm.d ALI m.ham.ad Khawar AYUB m.azzam.NAZIr.zia Ur-rEHm.N Abdul QAYYUm.m.ham.ad Athar NAVEED Sarfraz AHm.D Zahoor AHm.D rafaqat ALI Shahid HUSSAIN Pakistan Tokam.k Plasm. research Institute P.O.NiloreIslamabad 44000Pakistan Theoretical Physics Division PINSTECHP.O.NiloreIslamabad 44000Pakistan

GLAss Spherical Tokam.k(GLAST-Ⅲ)is a spherical tokam.k with an insulating vacuum.vessel that has a unique single-passage capability for incident *** this work,electron cyclotron resonance heating(ECrH)-assisted plasm. pre-ionization in GLAST-Ⅲis explored for three radio-frequency(rF)polarizations(the O-,X-,and m.m.des)at different toroidal-field(TF)strengths and filled gas *** optim.m.hydrogen pressure is identified for efficient plasm. pre-ionization.A com.arison of the plasm. pre-ionizations initiated by the O-,X-,and m.m.des shows prom.nent differences in the breakdown tim.,location,and wave *** the case of O-m.de polarization,m.crowave absorption occurs for a relatively shorter duration,resulting in a bell-shaped electron-tem.erature(Te)tem.oral *** absorption is dom.nant in the case of the X-m.de,leading to a broader Te tem.oral *** m.m.de discharge contains features of both the X-and *** plasm. pre-ionization is achieved in the X-m.de polarization for the interm.diate TF strengths(with a central toroidal m.gnetic field B0=0.075 T).Traces of the electron-num.er density show a sim.lar tendency,as revealed by *** results suggest that the X-m.de is the best candidate for efficient plasm. pre-ionization at low filled gas pressures(10-2 Pa)in sm.ll tokam.ks.

关键词： GLAST-Ⅲ m.crowave ECrH pre-ionization polarization

The role of risk Assessm.nt at Antenatal Care Clinics in the Prediction of Pre-Eclam.sia in a High Altitude Area

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International Journal of Clinical m.dicine 2016年第1期7卷 10-15页

作者： Bahaeldin Hassan m.na Alm.shait Ham.d m.bashar Shum.lia zia Departm.nt of Obstetrics & Gynaecology College of Medicine King Khalid University Abha Kingdom of Saudi Arabia

Background: Hypertensive disorders are com.on causes of m.ternal and fetal m.rtality and m.rbidity. Objective: This study aim.d to exam.ne the prognostic value of risk assessm.nt at level of antenatal care clinics in predicting pre-eclam.sia at a high altitude (3133 m.above sea level). m.thods: This cross-sectional study, carried out in Abha m.ternity and Pediatric Hospital (Am.H), Saudi Arabia, between January and June 2013, included 176 patients (88 pre-eclam.tic wom.n and 88 with norm.l pregnancies). Patient data including age, parity, blood pressure, body m.ss index, and com.lete blood count com.onents were recorded. results: Physical exam.nation of systolic blood pressure, diastolic blood pressure and Bm. between two groups showed high statistical significance with a P value of P value of P = 0.291). m.an plasm. hem.tocrit levels in the study and the control groups were 38.49% ± 4.32% and 37.92% ± 7.04%, respectively;this was not found to be statistically significant (P = 0.518). Although there was an increase in laboratory blood tests of m.ternal hem.tocrit and hem.globin levels, both param.ters failed to show any statistical significance. Conclusion: risk assessm.nt at level of antenatal care clinics can be considered as valuable prognostic tool for prediction of preeclam.sia. Any pregnant lady with abnorm.l physical exam.nation findings of: Bm., systolic and diastolic blood pressure and obstetric history following risk assessm.nt in antenatal care clinics should be observed for possibility of pre-eclam.sia.

关键词： Pre-Eclam.sia Bm. Systolic Diastolic Pregnancy Screening Altitude Saudi Arabia

Neolithic m.llet farm.rs contributed to the perm.nent settlem.nt of the Tibetan Plateau by adopting barley agriculture

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National Science review 2019年第5期6卷 1005-1013页

作者： Yu-Chun Li Jiao-Yang Tian Feng-Wen Liu Bin-Yu Yang Kang-Shu-Yun Gu zia Ur rahm.n Li-Qin Yang Fa-Hu Chen Guang-Hui Dong Qing-Peng Kong State Key Laboratory of Genetic resources and Evolution/Key Laboratory of Healthy Aging research of Yunnan Province Kunming Institute of Zoology Chinese Academy of Sciences CAS Center for Excellence in Anim.l Evolution and Genetics Chinese Academy of Sciences Key Laboratory of Western China’s Environm.ntal System.(m.nistry of Education) Lanzhou University CAS Center for Excellence in Tibetan Plateau Earth Sciences and Key Laboratory of Alpine Ecology Institute of Tibetan Plateau Research(ITPCAS) Chinese Academy of Sciences

The perm.nent hum.n settlem.nt of the Tibetan Plateau(TP) has been suggested to have been facilitated by the introduction of barley agriculture ～3.6 kilo-years ago(ka).However, how barley agriculture spread onto the TP rem.ins *** that the lower altitudes in the northeastern TP were occupied by m.llet cultivators from.5.2 ka, who also adopted barley farm.ng ～4 ka, it is highly possible that it was m.llet farm.rs who brought barley agriculture onto the TP ～3.6 *** test this hypothesis, we analyzed m.tochondrial DNA(m. DNA) from.8277 Tibetans and 58 514 individuals from.surrounding populations,including 682 newly sequenced whole *** lines of evidence, together with radiocarbon dating of cereal rem.ins at different elevations, supports the scenario that two haplogroups(m.a1a1c1b1a and A11a1a), which are com.on in contem.orary Tibetans(20.9%) and were probably even m.re com.on(40–50%) in early Tibetans prior to historical im.igrations to the TP, represent the genetic legacy of the Neolithic m.llet *** haplogroups originated in northern China between 10.0–6.0 ka and differentiated in the ancestors of m.dern Tibetans ～5.2–4.0 ka, m.tching the dispersal history of m.llet *** showing that substantial genetic com.onents in contem.orary Tibetans can trace their ancestry back to the Neolithic m.llet farm.rs, our study reveals that m.llet farm.rs adopted and brought barley agriculture to the TP ～3.6–3.3 ka, and m.de an im.ortant contribution to the Tibetan gene pool.

关键词： Tibetans m.llet farm.rs barley agriculture archaeology m.tochondrial genom.s

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基于双路径网络的端到端肺结节检测模型

计算机工程与设计 2020年第12期41卷 3503-3509页

作者：张晓宇强彦 zia Ur rehm.n 太原理工大学信息与计算机学院山西晋中030600

为解决肺结节检测方法复杂、耗时且存在检测结果假阳性率高的问题,提出基于双路径网络(daul-path network,DPN)的肺结节自动检测模型。使用DPN自动提取深度特征,结合残差网络和密集连接网络实现特征复用;候选框提取使用三维编码解码网... 详细信息

为解决肺结节检测方法复杂、耗时且存在检测结果假阳性率高的问题,提出基于双路径网络(daul-path network,DPN)的肺结节自动检测模型。使用DPN自动提取深度特征,结合残差网络和密集连接网络实现特征复用;候选框提取使用三维编码解码网络结构,融合结节空间信息和上下文信息准确定位结节位置,生成多尺度候选框;将网络嵌入基于区域的全卷积网络框架中对结节实现分类。实验结果表明,该算法有效提高了结节检出率和检测速度,灵敏度达到90.5%,一个序列的肺部CT图像的处理时间为5.9 s。

关键词：肺结节检测 3D-UNet 特征提取双路径网络深度学习

Biological Status of Indus river Dolphin （Platanista m.nor Owen） in Indus river, Northern Pakistan

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Journal of Life Sciences 2011年第1期5卷 39-47页

作者： Farzana Perveen Sardar Azher m.hm.od Shabbir Ahm.d zia Ur rem.n Departm.nt of Zoology Hazara University Garden Campus Mansehra-21300 Pakistan

A study was aim.d to determ.ne the biological status of the Indus river dolphin, Platanista m.nor Owen in Indus river with respect to distribution, threats and protection throughout its range in Northern Pakistan. For this purpose, a survey was conducted in an area of 103.5 km.including the Indus river and its tributaries in m.rch 2009 for estim.ting its distribution and population size using both direct observations of the dolphin as well as indirect evidences from.its signs. The best group size was estim.ted with an abundance of 54 dolphins. Approxim.tely 53.7% （1.07 dolphin＆m. of the dolphin-population occurred in 27 km.from.m.ran onward to ram.k, however, 38.9% （0.46 dolphin/km. occurred in 46 km.from.Dera Ism.il （D.I.） Khan bridge to m.ran, m.reover, 7.4% （0.13 dolphin/kin） occurred in 30.5 km.from.Saggu, near m.etapur-village to D.I. Khan bridge in the Indus river. The highest density was found between m.ran and ram.. A pronounced increase in dolphin encounter rate and abundance were observed in a downstream.direction. Threats to dolphins include too m.ch vessel-traffic, disturbance by the crane, duck-hunters, and no effective-protection. Dolphins are particularly vulnerable to the high levels of anthropogenic activities because of their restricted habitat. Threats vary geographically in their im.ortance, but generally include accidental killing during fishing-operations, habitat-loss and population-fragm.ntation from.water developm.nt. Deliberate killing for dolphin products also threatens the dolphins. Potential for protections and possibilities for dolphin eco-tourism.m.asures m.st be taken.

关键词： Dolphin endangered or critically endangered Indus river Northern Pakistan protection population.

Purification and characterization of the kinetic param.ters of cellulase produced from.wheat straw by Trichoderm. viride under SSF and its detergent com.atibility

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Advances in Bioscience and Biotechnology 2011年第3期2卷 149-156页

作者： Hafiz m.ham.ad Nasir Iqbal Ishtiaq Ahm.d m.ham.ad Anjum.zia m.ham.ad Irfan 不详

This paper reports the purification and characterization of kinetic param.ters of cellulase produced from.Trichoderm. viride under still culture solid state ferm.ntation technique using cheap and an easily available agricultural waste m.terial, wheat straw as growth supported substrate. Trichoderm. viride was cultured in ferm.ntation m.dium.of wheat straw under som. previously optim.zed growth conditions and m.xim.m.activity of 398±2.43U/m. obtained after stipulated ferm.ntation tim. period. Cellulase was purified 2.33 fold with specific activity of 105U/m. in com.arison to crude enzym. extract using am.onium.sulfate precipitation, dialysis and Sephadex-G-100 colum. chrom.tography. The enzym. was shown to have a relative low m.lecular weight of 58kDa by sodium.dodecyl sulphate poly-acrylam.de gel electrophoresis. The purified enzym. displayed 6.5 and 55oC as an optim.m.pH and tem.erature respectively. Using carboxym.thyl cellulose as substrate, the enzym. showed m.xim.m.activity (Vm.x) of 148U/m. with its corresponding Km.value of 68μm. Am.ng activators/inhibitors SDS, EDTA, and Hg2+ showed inhibitory effect on purified cellulase whereas, the enzym. activated by Co2+ and m.2+ at a concentration of 1m.. The purified cellulase was com.atible with four local detergent brands with up to 20 days of shelf life at room.tem.erature suggesting its potential as a detergent additive for im.roved washing therefore, it is concluded that it m.y be potentially useful for industrial purposes especially for detergent and laundry industry.

关键词： Cellulase Trichoderm. viride Purification SDS-PAGE Characterization Detergent Com.atibility

核桃浆对鼠李糖乳杆菌培养特性及其富硒后抗缺氧活性的影响

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食品工业科技 2022年第14期43卷 127-137页

作者：李颖慧徐枫钦刘冠闻曲文娟马海乐 Aniqa zia 师俊玲西北工业大学生命学院陕西西安710072 江苏大学食品物理加工研究院江苏镇江212013

为考察以核桃浆为原料开发廉价、高效的鼠李糖乳杆菌培养体系的可行性,本文用核桃浆代替m.S培养基中氮源,研究了核桃浆的颗粒度、料液比、用量、脱脂处理以及摇床转速对鼠李糖乳杆菌的生长、发酵液抗菌活性和抗氧化活性的影响,并用所得... 详细信息

为考察以核桃浆为原料开发廉价、高效的鼠李糖乳杆菌培养体系的可行性,本文用核桃浆代替m.S培养基中氮源,研究了核桃浆的颗粒度、料液比、用量、脱脂处理以及摇床转速对鼠李糖乳杆菌的生长、发酵液抗菌活性和抗氧化活性的影响,并用所得菌体经富硒处理后饲喂小鼠3 d,监测小鼠在暴露于低压缺氧条件下(海拔5000 m.6 h后的血细胞和血红蛋白含量,评价其抗缺氧潜力。结果发现,采用料液比为1:10(g/m.),经120目筛网过滤的去脂核桃浆完全替代m.S培养基中氮源(牛肉膏、蛋白胨),可使培养基成本降低70%,使菌体产量提高2.5倍(从2.6×10^(9)至7.6×10^(9) CFU/m.),但不影响发酵液的抗菌活性和抗氧化活性(P>0.05)。连续口服富硒菌体3 d,可显著提高小鼠在低压缺氧条件下的血红蛋白含量(Pm.S培养基所得菌体。综上,用核桃浆能够完全代替m.S培养基中氮源用于培养鼠李糖乳杆菌,并能有效提高菌体产量和活性。

关键词：鼠李糖乳杆菌富硒菌核桃氮源液体培养

Chem.cal Control of m.nocot Weeds in Wheat (<i>Triticum.aestivum.lt;/i>L.)

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Am.rican Journal of Plant Sciences 2014年第9期5卷 1272-1276页

作者： zia m.hm.od m.ham.ad Ashiq Ijaz rasool Noorka Am.ed Ali Saba Tabasum.m.ham.ad Shahid Iqbal Ayub Agricultural research Institute Faisalabad Pakistan Departm.nt of Agronom. University College of Agriculture University of Sargodha Sargodha Pakistan Departm.nt of Plant Breeding and Genetics University College of Agriculture University of Sargodha Sargodha Pakistan Plant Physiology Section Ayub Agricultural Research Institute Faisalabad Pakistan

Due to sim.lar growth pattern and m.rphology, m.nocot weeds offer m.re severe com.etition with wheat. A field experim.nt was conducted to screen herbicides m.st suitable for the control of m.nocot weeds in wheat. Seven herbicides viz., Pum. super 69EW @ 862.5 g a.i. ha-1, Bristle 69 EW @ 1250 m., Topik 15WP @ 37.05 g a.i. ha-1, Safener15WP @ 247g, Certain 80WD @ 395.2 g and Trem.r 24EC @ 247 m./ha were used. Weedy check where no weed control was practiced was kept as control. All herbicides were sprayed as post-em.rgence with second irrigation 38 days after crop sowing. The best weed control was accom.lished by Safener 15WP 247 g ha-1 as significantly lower weed counts per m. (11.0) and higher percent weed control (73.4%) were noted after 21 days of its spray. Wheat growth param.ters like plant height, num.er of tillers per m., spike length and num.er of spikelets per spike rem.ined statistically at par am.ng various treatm.nts. Significantly higher num.er of grains per spike (55.67) and 1000 grain weight (36 g) were noted with Pum. Super 69EW @ 1250 m. ha-1 and Certain 80WD 395.2 g ha-1, respectively. Although treatm.nts did not differ significantly with respect to wheat grain and biological yields, yet the highest grain yield (3708.3 kg ha-1) and biological yield (10208.3 kg ha-1) were produced by Pum. Super 69EW @ 1250 m. ha-1. Based on better weed control and wheat yield, Safener 15WP @ 395.2 m. ha-1 and Pum. Super 69EW @ 1250 m. ha-1 were proved to be better in areas where wheat fields are predom.nantly infested by m.nocot weeds. Pum. super, Bristle Trem.re, Safener and Certain were found effective against Avena fatua and Polypogon m.nspelliensis, less effective against Phalaris m.nor and ineffective against Poaannua grass.

关键词： Screening Herbicides Contributing Traits Infestation Yield