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1Response of soil Olsen-P to P budget under different long-term fertilization treatments in a fluvo-aquic soil显示文摘The concentration of soil Olsen-P is rapidly increasing in many parts of China, where P budget(P input minus P output) is the main factor influencing soil Olsen-P. Understanding the relationship between soil Olsen-P and P budget is useful in estimating soil Olsen-P content and conducting P management strategies. To address this, a long-term experiment(1991–2011) was performed on a fluvo-aquic soil in Beijing, China, where seven fertilization treatments were used to study the response of soil Olsen-P to P budget. The results showed that the relationship between the decrease in soil Olsen-P and P deficit could be simulated by a simple linear model. In treatments without P fertilization(CK, N, and NK), soil Olsen-P decreased by 2.4, 1.9, and 1.4 mg kg^(–1) for every 100 kg ha^(–1) of P deficit, respectively. Under conditions of P addition, the relationship between the increase in soil Olsen-P and P surplus could be divided into two stages. When P surplus was lower than the range of 729–884 kg ha^(–1), soil Olsen-P fluctuated over the course of the experimental period with chemical fertilizers(NP and NPK), and increased by 5.0 and 2.0 mg kg^(–1), respectively, when treated with chemical fertilizers combined with manure(NPKM and 1.5 NPKM) for every 100 kg ha^(–1) of P surplus. When P surplus was higher than the range of 729–884 kg ha^(–1), soil Olsen-P increased by 49.0 and 37.0 mg kg^(–1) in NPKM and 1.5 NPKM treatments, respectively, for every 100 kg ha^(–1) P surplus. The relationship between the increase in soil Olsen-P and P surplus could be simulated by two-segment linear models. The cumulative P budget at the turning point was defined as the 'storage threshold' of a fluvo-aquic soil in Beijing, and the storage thresholds under NPKM and 1.5 NPKM were 729 and 884 kg ha^(–1)P for more adsorption sites. According to the critical soil P values(CPVs) and the relationship between soil Olsen-P and P budget, the quantity of P fertilizers for winter wheat could be increased and that of summer maize could be decreased based on the results of treatments in chemical fertilization. Additionally, when chemical fertilizers are combined with manures(NPKM and 1.5 NPKM), it could take approximately 9–11 years for soil Olsen-P to decrease to the critical soil P values of crops grown in the absence of P fertilizer.ZHANG Wei-wei ZHAN Xiao-ying ZHANG Shu-xiang Khalid Hamdan Mohamed Ibrahima XU Ming-gang 2019Journal of Integrative Agriculture2019,18,3:6
2高取代度淀粉醋酸酯合成工艺优化及结构表征显示文摘以玉米淀粉为实验材料,在催化剂用量、醋酸与醋酸酐体积比、反应时间、反应温度4个单因素试验基础上,利用响应面试验设计法进行试验设计,获得取代度与各单因素的函数关系,并建立高取代度淀粉醋酸酯合成工艺模型。通过回归方程和响应曲面,得到淀粉醋酸酯最佳合成工艺为催化剂用量0.11mL、醋酸与醋酸酐体积比1:1.39、反应时间1.59h、反应温度87.61℃。验证实验结果显示,在此条件下淀粉醋酸酯取代度为2.95。傅里叶红外光谱分析表明,淀粉醋酸酯葡萄糖单元上的羟基逐渐发生酯化,而且随着取代度测定值升高,乙酰基含量增大。扫描电镜照片显示,淀粉醋酸酯表面变得更为粗糙,孔隙增多且呈蜂窝状,说明酯化反应不仅发生在淀粉颗粒表面,同时也发生在淀粉颗粒内部。李海龙 陈鹏 DIOP Cherif Ibrahima Khalil 谢笔钧 孙智达 2011食品科学2011,32,4:4
3High Risk Factors of Pancreatic Carcinoma显示文摘Over the past decades, cancer has become one of the toughest challenges for health professionals. The epidemiologists are increasingly directing their research efforts on various malignant tumor worldwide. Of note, incidence of cancers is on the rise more quickly in developed countries. Indeed, great endeavors have to be made in the control of the life-threatening disease. As we know it, pancreatic cancer(PC) is a malignant disease with the worst prognosis. While little is known about the etiology of the PC and measures to prevent the condition, so far, a number of risk factors have been identified. Genetic factors, pre-malignant lesions, predisposing diseases and exogenous factors have been found to be linked to PC. Genetic susceptibility was observed in 10% of PC cases, including inherited PC syndromes and familial PC. However, in the remaining 90%, their PC might be caused by genetic factors in combination with environmental factors. Nonetheless, the exact mechanism of the two kinds of factors, endogenous and exogenous, working together to cause PC remains poorly understood. The fact that most pancreatic neoplasms are diagnosed at an incurable stage of the disease highlights the need to identify risk factors and to understand their contribution to carcinogenesis. This article reviews the high risk factors contributing to the development of PC, to provide information for clinicians and epidemiologists.Soriba Naby Camara 殷涛 杨明 李响 龚琼 周静 赵刚 杨智勇 Tajoo Aroun Martin Kuete Sonam Ramdany Alpha Kabinet Camara Aissatou Taran Diallo 冯珍 宁辛 熊炯新 陶京 钦琪 周伟 崔静 黄敏 郭尧 勾善淼 王博 刘涛 Ohoya Etsaka Terence Olivier Tenin Conde Mohamed Cisse Aboubacar Sidiki Magassouba Sneha Ballah Naby Laye Moussa Keita Ibrahima Sory Souare Aboubacar Toure Sadamoudou Traore Abdoulaye Korse Balde Namory Keita Naby Daouda Camara Dusabe Emmanuel 吴河水 王春友 2016Journal of Huazhong University of Science and Technology(Medical Sciences)2016,36,3:3
4Stereotactic body radiation therapy for management of spinal metastases in patients without spinal cord compression: a phase 1–2 trial显示文摘Xin Shelley Wang Laurence D Rhines Almon S Shiu James N Yang Ugur Selek Ibrahima Gning Ping Liu Pamela K Allen Syed S Azeem Paul D Brown Hadley J Sharp David C Weksberg Charles S Cleeland Eric L Chang 2012Lancet Oncology2012,,4:2
5Review of the malaria epidemiology and trends in Zambia显示文摘A comprehensive desk review of malaria trends was conducted between 2000-2010 in Zambia to study malaria epidemiology and trends to guide strategies and approaches for effective malaria control.This review considered data from the National Health Information Management System,Malaria Surveys and Programme Review reports and analyzed malaria in-patient cases and deaths in relation to intervention coverage for all ages.Data showed three distinct epidemiological strata after a notable malaria reduction(66%)in in-patient cases and deaths,particularly between 2000-2008.These changes occurred following the(re-)introduction and expansion of indoor residual spraying up to 90%coverage,scale-up of coverage of long-lasting insecticidetreated nets in household from 50%to 70%,and artemisin-based combination therapy nationwide.However,malaria cases and deaths re-surged,increasing in 2009-2010 in the northern-eastern parts of Zambia.Delays in the disbursement of funds affected the implementation of interventions,which resulted in resurgence of cases and deaths.In spite of a decline in malaria disease burden over the past decade in Zambia,a reversal in impact is notable in the year 2009-2010,signifying that control gains are fragile and must be sustained toeliminate malaria.Freddie Masaninga Emmanuel Chanda Pascalina Chanda-Kapata Busiku Hamainza Hieronymo T Masendu Mulakwa Kamuliwo Wambinji Kapelwa John Chimumbwa John Govere Mac Otten Ibrahima Soce Fall Olusegun Babaniyi 2013Asian Pacific Journal of Tropical Biomedicine2013,3,2:2
6Microfacies and Depositional Environments of Miocene Isolated Carbonate Platforms from Central Luconia, Offshore Sarawak, Malaysia显示文摘The Luconia Province-offshore Sarawak-is a key geological unit for understanding the distribution of hydrocarbon resources in Malaysia. Nevertheless, little effort has been made to address the palaeoenvironmental characteristics of the Tertiary carbonates in the key sector of Central Luconia.We study the sedimentology and petrography of core samples from a well in Central Luconia, for which thirteen microfacies have been identified reflecting different depositional settings. This is the first microfacies scheme elaborated for Luconian carbonates. Lithofacies and microfacies distribution are compatible with deposition in a reef complex, originating around a framework reef, within the euphotic zone. Sediments were deposited in environments of backreef, reef crest, and forereef. The fair weather wave base is marked by the presence of coralline red algae, foraminifera, decreasing degree of bioclast fragmentation and other microfacies features. As a result, a depositional-environmental model is constructed, depicting a reef complex built around a framework reef developed on the margin of an isolated platform. In addition, an innovative, preliminary time series analysis of facies, microfacies and depositional environment data reveal the existence of seasonal cycles in the stacking patterns of facies and microfacies.Hammad Tariq JANJUHAH José Antonio GáMEZ VINTANED Ahmed Mohamed Ahmed SALIM Ibrahima FAYE Mumtaz Muhammad SHAH Deva Prasad GHOSH 2017Acta Geologica Sinica(English Edition)2017,91,5:2
7Effects of acetic acid/acetic anhydride ratios on the properties of corn starch acetates显示文摘Cherif Ibrahima Khalil Diop Hai Long Li Bi Jun Xie John Shi 2010Food Chemistry2010,,4:2
8Influence of joint relaxation on deterministic and stochastic panel flutter显示文摘Ibrahima R A Beloiua D M 2005AIAA J2005,43,7:1
9Influence of boundary conditions relaxation on panel flutter with compressive in-plane loads 显示文摘Beloiua D M Ibrahima R A Pettit C L 2005Journal of Fluids and Structures2005,,:1
10Can litter decomposability be predicated by near infrared reflectance spectroscopy显示文摘Gillon D Joffre R Ibrahima A 1999Ecology1999,80,1:1
11Effects of acetic acid/acetic anhydride ratios on the properties of com starch acetates 显示文摘Cherif Ibrahima Khalil Diop LI Hai-long XIE Bi-jun 2011Food Chemistry2011,126,4:1
12The Model of Crowdfunding to Support Small and Micro Businesses in Indonesia Through a Web-based platform 显示文摘Ibrahima N Verliyantina D 2012Pro- cedia Economics and Finance2012,,4:1
13Allometric equations for biomass estimations in Cameroon and pan moist tropical equations including biomass data from Africa 显示文摘Djomo A N Ibrahima A Saborowski J 2010Forest Ecology and Management2010,260,10:1
14Robust Fractional-Order Proportional-Integral Observer for Synchronization of Chaotic Fractional-Order Systems显示文摘In this paper, we propose a robust fractional-order proportional-integral(FOPI) observer for the synchronization of nonlinear fractional-order chaotic systems. The convergence of the observer is proved, and sufficient conditions are derived in terms of linear matrix inequalities(LMIs) approach by using an indirect Lyapunov method. The proposed FOPI observer is robust against Lipschitz additive nonlinear uncertainty. It is also compared to the fractional-order proportional(FOP) observer and its performance is illustrated through simulations done on the fractional-order chaotic Lorenz system.Ibrahima N’Doye Khaled Nabil Salama Taous-Meriem Laleg-Kirati 2019IEEE/CAA Journal of Automatica Sinica2019,6,1:1
15Chemical and thermal properties of lignins from oil palm biomass as a substitute for phenol in a phenol formaldehyde resin production显示文摘Ibrahima M N M Zakariaa N Sipautb C S 2011Carbohyd Polym2011,86,:1
16Uncertainties and dynamic problemsof bolted joints and other fasteners 显示文摘Ibrahima R A Pettitb C L 2005Journal of Sound andVibration2005,279,:1
17Energy storage systems characteristics and comparisons显示文摘Ibrahima H Ilineaa A Perron J 2008Renewable and Sustainable Energy Reviews2008,12,5:1
18The effects of obstructions on overpressure resulting from premixed flame deflagration显示文摘IBRAHIMA S S MASRI A R 2001Journal of Loss Prevention in the Process Industries2001,14,3:1
19Breast cancer diagnosis in digital mammogram using multiscale curvelet transform显示文摘Mohamed ME Ibrahima F Brahim BS 2010Computerized Medical Imaging and Graphics2010,34,4:1
20A comparison of wavelet and curvelet for breast cancer diagnosis in digital mammogram显示文摘Mohamed ME Ibrahima F Brahim BS 2010Computerized Medical Imaging and Graphics2010,40,4:1
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