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排灌机械工程学报 2022年第3期40卷 317-324页

作者：李欣雨张川闫浩芳 AKHLAQ muhammad 李岚兰张文程王纪章江苏大学农业工程学院江苏镇江212013 江苏大学国家水泵及系统工程技术研究中心江苏镇江212013

为了探究生物炭用量和灌水量对土壤物理性质及作物生长生理特性的影响,采用田间对比试验,以温室番茄为试验对象,设置了3个生物炭施用量处理B0,B1,B2(施用量分别为0,2.5,5.0 kg/m^(2));在每个生物炭处理下设置3个不同灌水量水平T1,T2,T3... 详细信息

为了探究生物炭用量和灌水量对土壤物理性质及作物生长生理特性的影响,采用田间对比试验,以温室番茄为试验对象,设置了3个生物炭施用量处理B0,B1,B2(施用量分别为0,2.5,5.0 kg/m^(2));在每个生物炭处理下设置3个不同灌水量水平T1,T2,T3(分别为1.4Ep,1.2Ep,1.0Ep;Ep为累计水面蒸发量);观测并分析土壤物理性质、番茄生长及光合作用对生物炭施用量和灌水量的响应关系.结果表明,土壤中适当添加生物炭可以有效地增加土壤的保水性,处理B1和B2相对B0增大土壤最大体积含水率为21.9%和32.1%,处理B1有益于土壤的长期持水能力;降低了土壤容重2.5%~16.6%,增加了土壤孔隙度1.9%~10.5%.生物炭施用量在充分灌溉和中度亏缺的处理下均可以有效提高番茄的气孔导度和光合速率,处理B1和B2分别提高番茄叶片的光合速率为11.4%和54.8%;而在重度亏缺的条件下,处理B1和B2抑制了番茄叶片的光合速率16.7%和50.6%.

关键词：生物炭灌水量土壤保水性番茄生理特性温室

RLS Estimation of fNIRS Signal Strength as GLM Parameters,In the Course of Real-time Brain Activation Detection

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RLS Estimation of fNIRS Signal Strength as GLM Parameters,In...

第二十九届中国控制会议

作者： muhammad AQIL Keum-Shik HONG Myung-Yung JEONG Department of Cogno-Mechatronics Engineering Pusan National University

This paper presents a recursive least square（RLS）estimation based technique to find the signal strength of the functional near infrared spectroscopy（fNIRS）as parameters of general linear model（GLM）.The proposed method uses the sampled version of the neuron’s hemodynamic response（design matrix）of the specific experimental *** results verify the effectiveness of the proposed technique by providing the activity levels at the measuring channels simultaneously while performing the motor-task *** real-time RLS based convergence of activity parameters effectively avoids the necessity of the long experiment as was required for the currently available off-line *** effectiveness of RLS and GLM based method is also verified by obtaining the equally acceptable results with unfiltered *** proposed method can be utilized for fNIRS based real-time brain imaging technology to cope the delay,inserted by the currently available off-line methods,in obtaining the medical diagnostic results.

关键词： Brain Imaging Near Infrared Spectroscopy General Linear Model Recursive Least Square Estimation

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贸易自由化对巴基斯坦农业增长的影响研究

贸易自由化对巴基斯坦农业增长的影响研究

作者： muhammad Sohail Jafar Son of Rana Jafar Hussain 福建农林大学

学位级别：硕士

国际贸易是个人、组织、政府之间相互影响的过程。这个过程对于世界各地的政治制度,经济发展和繁荣以及社会中的人类福祉都有着显著的影响。近二十年来,像世界贸易组织的其他成员国一样,巴基斯坦已经实施了贸易开放政策。巴基斯坦的农... 详细信息

国际贸易是个人、组织、政府之间相互影响的过程。这个过程对于世界各地的政治制度,经济发展和繁荣以及社会中的人类福祉都有着显著的影响。近二十年来,像世界贸易组织的其他成员国一样,巴基斯坦已经实施了贸易开放政策。巴基斯坦的农业部门在这个国家的经济中起着关键的作用,并在国际贸易中做出了重要贡献,同时,也是农村人口的主要就业去向。在本文的研究中通过运用1985-2015年间的时间序列数据来评估贸易开放度对巴基斯坦农业增长的影响并提出对策建议。文章第一部分阐述了研究的总体背景、研究意义、研究内容和研究方法。论文进一步总结和分析了巴基斯坦贸易自由化和农业部门的相关文献。文章第二部分简要讨论了现有的理论和实证文献,这些文献主要讨论贸易自由化及其在国家和国际上的发展前景。第三部分,简要阐述了巴基斯坦农业部门的绩效、外商直接投资和贸易政策。此外,还涉及到了农业部门外商直接投资的绩效问题,贸易战略架构,以及有关于巴基斯坦的贸易自由化贸易协定。文章第四部分、第五部分阐述了本文的理论框架和实证分析方法。此外,还运用了变量描述、数据源、计量模型和统计分析等方法对巴基斯坦贸易自由化及其对农业增长的影响进行了分析。文章运用普通最小二乘回归模型进行分析,运用ADF和PP检验进行平稳性分析。此外,运用CUSUM检验和CUSUM平方检验来确定参数的结构稳定性。研究中以农业增加值产品为因变量,以贸易开放度为自变量,以外商直接投资和人口增长为控制变量。模型研究结果表明,对于国家的农业增长,贸易开放度对其有着负面且重大的影响,而人口增长对其有着重要及正面的影响。负面影响是由于农产品进口增加的态势损害了国内市场。政府应增加农业出口并且只进口必要的农产品以促进国内农业产业的发展。文章最后一部分对结果进行总结,并提出建议如下;同时指出本研究的局限性以及提出进一步的研究设想。同时政府应增加农业出口,进口仅对促进国内产业发展有必要性的农产品。鼓励和引导外商直接投资于有利于经济增长的农业部门以及农业产业。在经济制造业和农业部门营造投资友好型环境,从而吸引外国直接投资者进入这些行业。本研究仅关注巴基斯坦的农业增长,因此,这为比较贸易自由化对其他部门和其他成员国的影响提供了选项。也因此,贸易自由化的影响分析范围可以扩展至分析其对贸易的影响,对部门的影响以及对国家的影响。分析自由贸易协定的可逆影响,范围可以扩展到巴基斯坦和其他成员国之间的出口和进口。此外,将其他东盟国家纳入研究可以使分析更完整,并发现哪些国家是自由贸易协定的最大受益者。

关键词：贸易自由化农业增长外商直接投资人口增长巴基斯坦

Anomalous Origin and Course of Coronary Artery—Presentation of Three Cases

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World Journal of Cardiovascular Surgery 2019年第8期9卷 89-95页

作者： Ankit Maheshwari Soumyadip Saha Tanunita Mondal Harpreet Singh Minhas muhammad Abid Geelani Department of CTVS Govind Ballabh Pant Institute of Postgraduate Medical Education & Research Delhi India Department of Anaesthesia Govind Ballabh Pant Institute of Postgraduate Medical Education & Research Delhi India

Anomalous origin of coronary arteries may be encountered coincidentally in the presence of unrelated pathology or when these are affected directly. This may directly be responsible for affecting the procedure or outcome. Various types of anomalies of origin,?as well as course of coronary arteries,?have been classified in the past. Here we report 3 cases of anomalous origin of coronary arteries in different scenarios. First case had anomalous coronary with bicuspid aortic valve with dilated ascending aorta for which Bentall’s procedure was done, while the second and third cases were anomalous coronaries with coronary artery disease for which coronary artery bypass grafting was done.

关键词： Anomalous Origin of Coronary Artery Bentall’s Procedure Coronary Artery Bypass Graft

Possible Chemosensitizing and Potent Anticancer Effects of D-Fraction in Combination with Vitamin C on Three Prevalent Urologic Cancer Cells

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Journal of Cancer Therapy 2014年第14期5卷 1402-1411页

作者： Drew Freilich Eric Moskowitz Nicholas Feuer muhammad Choudhury John Phillips Sensuke Konno Department of Urology New York Medical College Valhalla USA

Chemotherapy is currently one of the most common therapeutic options for cancer patients despite the poor efficacy with considerable side effects. We then examined if D-fraction (DF), a bioactive mushroom extract, could potentiate (poor) anticancer effects of those drugs?in vitro. Three urologic cancers, prostate, bladder, and kidney cancers, were tested with various chemotherapeutic drugs and their combinations with DF. Compared to individual drugs alone, combinations of drugs and DF have improved anticancer activity, resulting in the significant (P < 0.05) cell viability reduction in all three cancer cells. As vitamin C (VC) has been postulated to potentiate the bioactivity of DF, this possibility was also examined. The specific combination of DF (300 μg/ml) and VC (200 μM) indeed led to the drastic (≥90%) viability reductions in all three cancer cells. To have a better understanding of such a profound viability reduction, the effect of DF/VC combination on cell cycle was examined next. Cell cycle analysis indicated that this combination induced a G1cell cycle arrest, which was also confirmed by the down-regulation of specific cell cycle regulators (CDK2, CDK4, and cyclin D1) detected on western blots. Moreover, it was crucial to address if the DF/VC-induced viability reduction could be also linked to apoptosis. Western blot analysis revealed that anti-apoptotic bcl-2 was down-regulated while pro-apoptotic Bax was up-regulated with DF/VC combination in all cancer cells, indicating induction of apoptosis. Therefore, the DF/VC combination could ultimately induce apoptosis, accounting for the severe cell viability reduction. In conclusion, DF appears to be a promising agent with chemosensitizing effect, enhancing the efficacy of chemotherapeutic drugs, and its combination with VC exhibits a potent anticancer effect, which is far superior to any combinations of drugs and DF tested in three prevalent urologic cancer cells.

关键词： Mushroom Extract Chemosensitizing Effect Anticancer Effect Combination Therapy Urologic Cancers

Impact of smoking on nasal mucociliary clearance time in Kano metropolis,Nigeria

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2023年第1期9卷 53-58页

作者： Ahmad Mahmud Abubakar D.Salisu Emmanuel S.Kolo muhammad G.Hasheem Nafisatu Bello-muhammad Ahmad R.Tukur Yasir J.Nuhu Rabiu I.Jalo Department of ENT Federal Medical Centre YolaYolaNigeria Department of ENT Aminu Kano Teaching HospitalKanoNigeria Department of ENT Aminu Kano Teaching HospitalBayero University KanoKanoNigeria Department of Community Medicine Aminu Kano Teaching Hospital/Bayero University KanoKanoNigeria

Background:Mucociliary clearance is an important defense mechanism in human upper and lower respiratory *** of this process by certain conditions such as cigarette smoking can predispose to chronic infection and neoplasm of the nose and paranasal ***:This was a cross-sectional study conducted in Kano metropolis,*** adults were enrolled,a saccharine test was conducted,and the nasal mucociliary clearance time was *** of the result was carried out using Statistical Product and Service Solutions version ***:There were 225 participants categorized into 75 active smokers(33.3%),74 passive smokers(32.9%),and 76 nonsmokers(33.8%,living in a smoking-free zone).The age range of the participants was between 18 and 50 years,with a mean age of(31.2±5.6)*** participants were *** were 139(61.8%)of Hausa-Fulani ethnic group,24(10.7%)Yoruba,18(8.0%)Igbo,and 44(19.5%)other ethnic *** in this study showed that the average mucociliary clearance time among active smokers was prolonged([15.25±6.20]min)compared to passive([11.41±4.25]min)and nonsmokers([9.17±2.76]min)respectively,with a statistical significance(F=33.59,P<0.001).Binary logistic regression revealed that the number of cigarettes smoked per day was an independent predictor of prolonged mucociliary clearance time(P=0.008,odds ratio=0.44,95%confidence interval=0.24–0.80).Conclusion:Active cigarette smoking is associated with prolonged nasal mucociliary clearance *** number of cigarette sticks smoked per day was found to be an independent predictor of prolonged mucociliary clearance time.

关键词： ciliary dyskinesia mucociliary clearance saccharin test smoking

A Disturbance-rejection Power Stabilizer for Power System Based-on Internal Model Control Framework

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A Disturbance-rejection Power Stabilizer for Power System Ba...

A Study of Advanced Efficient Hybrid Electric Vehicles, Electric Propulsion and Energy Source

第37届中国控制会议

作者： Yunjian Peng Qian Chen Weijie Sun muhammad Kashif School of Automation Science and Engineering South China University of Technology

The transient and steady-state stability of a single-machine infinite-bus（SMIB） power system is considered with the fluctuation of SMIB’s electric power,which is modeled as a sinusoidal *** taking the power-angle and angular velocity as the main states from Park’s equations for a synchronous generator,an output regulation design framework for power angle based on internal model controller is proposed to reject the disturbance of electric power and stabilize the power *** control scheme requires less feedback signals and achieves stabilization of SMIB subjected continuous disturbance with a wider range of the system’s operating conditions,which is essentially important for the stability of the large-scale multi-machines connected *** results of simulation at Matlab verify the effectiveness of the controller presented in the manuscript.

关键词： Single-machine Infinite-bus Power System Power Disturbance-rejected Stabilizer Power Angle Regulator Internal Model Control

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Journal of Power and Energy Engineering 2022年第7期10卷 1-12页

作者： muhammad Yousaf Iqbal Tie Wang Guoxing Li Dongdong Chen Mohammad Mahbubur Al-Nehari School of Mechanical Engineering Taiyuan University of Technology Taiyuan China

Recently global warming and the depletion of fuel resources have accelerated researchers’ efforts to produce more efficient and clean alternatives. This research presents a comprehensive review of the different adjustments/con figurations of electric vehicles (EVs) and hybrid electric vehicles (HEVs), traction motors for power systems, and wireless speed control of traction drive. Electronic installation of technology can reduce pollution efficiently and effectively. The efficient operation has always been one of the most common investigators’ objectives in the automotive industry and academic areas. There are several renewable energy resources for hybrid vehicles that will replace depleted gasoline worldwide. The purpose of this paper is the development of more efficient pure EVs, HEVs, and fuel cell electric vehicles (FCEV) present both a challenge and a definite solution to current mobility issues. Fuel consumption in cars is a concern due to the harmful effects on the environment. Among other battery sources, fuel cells (FC), super capacitors (SC), and photovoltaic cells are studied for vehicle application. A combination of these renewable energy sources can be used for hybrid electric vehicles (HEV) in the next generation of transportation. With the significant progress of automobile technology, the hybrid electric vehicle has already become the main achievement of transportation electrification due to its excellent fuel-saving performance.

关键词： Alternative Energy Resources Hybrid Electric Vehicle (HEV) Electrifica-tion

The Effects of Power Control on Free-Space Optical Communications during Snowfall and Rainfall

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International Journal of Communications, Network and System Sciences 2018年第10期11卷 216-227页

作者： Salem Salamah muhammad A. Alsubaie Mubarak Alhajri Mahmoud Alnaser Ahmed Mohamed Abdalla Department of Electronic Engineering Technology Public Authority of Applied Education and Training Adailiyah Kuwait

Free-space optical (FSO) communication requires a line-of-sight connection between a transmitter and a receiver in which the information signal is modulated by an optical carrier that propagates in free space. The FSO channel is greatly affected by weather conditions such as fog, rain, and snow. In the literature, several adaptive techniques, such as power control (PC), have been suggested to mitigate channel link degradations. In this paper, we investigate the effects of snow and rain attenuation on the bit error rate (BER) of the FSO system using two types of modulations, the on-off keying (OOK) modulation and the pulse-position modulation (16-PPM). The effect of PC on the performance of FSO communications is also examined in this study. We evaluated the system’s performance with two types of snow, wet snow and dry snow, as well as with different rain regions. Results show that PC improves the BER of the FSO system;a high rate of improvement is found for wet snow and rain. PC has almost no effect with dry snow because of the high attenuation and the limitations on transmitted power. The BER for 16-PPM is better than that for OOK modulation.

关键词： Free Space Optical Communications Snow Attenuation Rain Attenuation Power Control