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Impact of soil compaction on the engineering properties of potato tubers

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International Journal of Agricultural and Biological Engineering 2020年第2期13卷 163-167页

作者： mohamed K.Edrris Khalid A.Al-Gaadi Abdalhaleem A.Hassaballa ElKamil Tola Khalid A.m.Ahmed Precision Agriculture Research Chair King Saud UniversityRiyadh 11451Saudi Arabia Department of Agricultural Engineering College of Food and Agriculture SciencesKing Saud UniversityRiyadh 11451Saudi Arabia Department of Agricultural&Biological Engineering Faculty of EngineeringKhartoum UniversityKhartoumSudan Chair of Dates Industry and Technology King Saud UniversityRiyadh 11451Saudi Arabia

A study on a 30 hm2 field was conducted to assess the variability in soil compaction and to investigate its effect on the engineering properties of potato tubers in terms of tuber shape and key dimensions(length,width and thickness)and resistance to penetration,rupture and shear *** soil compaction levels were spatially correlated with the engineering properties of potato tubers through linear regression and ANOVA *** three compaction levels included a low level(C1)ranging between 1.2-1.9 mPa,a medium level(C2)with compaction levels between 2.0-2.3 mPa and a high level(C3)ranging between 2.4-2.9 *** revealed that there were no significant changes in the key tuber dimensions corresponding to the variability in soil ***,inverse linear relationships were observed between soil compaction and the key tuber dimensions with R2 values of 77%,97%and 96%for length,width and thickness,***,the soil compaction was shown to have no effect on the tuber resistance to compression and shear *** contrast,the tuber resistance to penetration was significantly affected by soil compaction(p>F=0.0012).

关键词： compaction potato tubers precision agriculture potato engineering properties

Effects of urea-N fertilizer dosage supplemented with Ipil-Ipil tree litter on yield of rice and insect prevalence

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Journal of Forestry Research 2006年第4期17卷 335-338页

作者： m. R. Abdullah K. L. Hossain Former graduate student Department of Agroforestry Bangladesh Agricultural University Mymensingh Mymenisngh-2202 Bangladesh Department of Agroforestry Faculty of Agriculture Bangladesh Agricultural University Mymenisngh-2202 Bangladesh

The present study was undertaken to determine the effects of different levels of urea-N fertilizer in addition to ipil-ipil tree litter on yield of rice and insect prevalence. The field study was conducted at the Agroforestry Field Laboratory, Bangladesh Agricultural University, mymensingh during July-December 2004. The treatments included 0, 90, 180, and 270 kg urea per hectare. All four treatments received five tons ipil-ipil tree litter per hectare. The experiment was laid out in a randomized complete block design （RCBD） with four replications. The results showed that the different treatments significantly influenced the yield and yield component viz. total tillers/hill, effective tillers/hill, filled grains and unfilled grains/panicle. The highest yield of 4.62 t·h^m-2 with an increase of 21.57% over the control was recorded in treatment 180 kg urea·h^m-2, which was statistically similar to treatment 90 kg urea·h^m-2. The prevalence of insects viz. green leafhopper, brown plant hopper, rice bugs, leaf folder and stem borers were mostly correlated with N-levels. The prevalence of insects in general gradu- ally increased with the increase of N. Therefore, this study suggests that the combined application of organic materials （tree litter of ipil-ipil） and N-fertilizer of 90 kg·h^m-2 may oroduce good yield while minimizine insect arevalence in the rice field.

关键词： Nitrogen fertilizer dosage Insect prevalence Rice Ipil-ipil Leucaena leucocephala

Palm Oil methyl Ester and Its Emulsions Effect on Lubricant Performance and Engine Components Wear

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Palm Oil Methyl Ester and Its Emulsions Effect on Lubricant ...

Effects of phosphorus and potassium addition on growth and nodulation of Dalbergia sissoo in the nursery

2011 2nd International Conference on Advances in Energy Engineering(ICAEE)

作者： m.mofijura H.H.masjuki m.A.Kalam m.Shahabuddin m.A.Hazrat A.m.Liaquat Centre for Energy Science Department of Mechanical EngineeringUniversity of Malaya

The results of an experimental work carried out to evaluate the effect of palm oil methyl esters,also known as palm oil diesel（Pod） and its emulsions as alternative fuel on unmodified indirect injection diesel engine’s wear and lube oil performance are presented in this *** throttle engine with constant 2500 rpm setting was maintained throughout the wear debris and lube oil analysis such as for a period of twenty hours for each fuel *** sample of lube oil was collected through a one- way valve connected to the crankcase sump at the interval of four *** the engine warmed up,first sample has collected *** same conventional lubricating oil SAE 30 was used for each fuel *** measure wear metal debris and lubricating oil additives depletion of used lubricating oil,multi element oil analyzer（mOA） was *** measure the viscosity of lub oil an ISL automatic houillon viscometer（ASTm D445） has been *** satisfactory results have been obtained by comparing the lub oil analysis results of Ordinary Diesel and Palm Oil Diesel and their emulsions with 10 percent water by *** crankcase oil samples,accumulation of wear metal debris was lower with Palm Oil Diesel and emulsified fuels compare to baseline Ordinary Diesel *** Ordinary Diesel and Palm Oil Diesel emulsions with 10 per cent water by volume showed promising trends for resisting wear.

关键词： methyl Ester Engine Oil Ordinary Diesel(od) Diesel Engine Wear

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Journal of Forestry Research 2007年第4期18卷 279-282页

作者： S. m. S. Huda m. Sujauddin S. Shafinat m. S. Uddin Institute of Forestry and Environmental Sciences University of Chittagong Chittagong-4331 Bangladesh Department of Forestry and Environmental Science School of Agriculture and Mineral Sciences Shahjalal University of Science and Technology Sylhet-3114 Bangladesh

A study was conducted to test the influence of different inorganic fertilizers （phosphorous and potassium） on the nodulation and growth of Dalbergia sissoo grown in the nursery. Before seeds sowing, different combinations of P, K fertilizers were incorporated with the nutrient-deficient natural forest soils, and then amended with cowdung （soil： cowdung = 3：1）. Nodulation status （nodule number, shape, fresh weight, dry weight and color） in the roots and the plant growth parameters （length of shoot and root, collar diameter, fresh and dry weight of shoot and root） were recorded 60 days after seeds sowing. Nodulation status and growth of the plants varied significantly （P〈0.05） in the soils amended with fertilizers in comparison to the control. The highest nodule number （62）, fresh （0.50 g） and dry （0.07 g） weights were recorded with the dose of PK at the rate of 160 kg/hm2. Nodule shape and color also varied widely in different treatments. In case of plant growth parameters, shoot and root length, collar diameter, fresh and dry weight of the plants took on a significant difference （P〈0.05） among various combination of fertilizers. From the study, it is revealed that PK at the rate of 160 kg/hm^2 fertilizer with soil and cowdung mixture （soil： eowdung = 3：1） is recommended for optimum growth and nodule formation of D. sissoo in degraded soils at a nursery level.

关键词： Dalbergia sissoo Inorganic fertilizers Nodulation Seedling growth Nursery

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胚胎嗅鞘细胞再移植治疗晚期脊髓损伤1例

中国组织工程研究与临床康复 2007年第33期11卷 6690-6692页

作者：陈琳黄红云江昭张峰郗海涛张健刘彦铖王洪美北京市虹天济神经科学研究院北京市100041 北京市西山医院暨北京康复中心神经外科北京市100041 北京市石景山区西山神经再生和功能重建研究所北京市100041

目的:对晚期脊髓损伤患者开展嗅鞘细胞再移植治疗,探讨其对神经功能的继续改善效果。方法:①患者男性,27岁,哈萨克斯坦籍,2001年9月20日遭霰弹枪击急诊手术后,双下肢不能运动及感觉消失,尿便失禁,右下肢阵发性钝痛。诊断为陈旧性完全性... 详细信息

目的:对晚期脊髓损伤患者开展嗅鞘细胞再移植治疗,探讨其对神经功能的继续改善效果。方法:①患者男性,27岁,哈萨克斯坦籍,2001年9月20日遭霰弹枪击急诊手术后,双下肢不能运动及感觉消失,尿便失禁,右下肢阵发性钝痛。诊断为陈旧性完全性脊髓损伤(T12),美国脊髓损伤协会标准脊髓功能分级为A级。2002年9月30日第1次行脊髓胚胎嗅鞘细胞移植术,2007年2月5日行第2次脊髓胚胎嗅鞘细胞移植术。治疗方案患者知情同意。②取4个月流产胚胎(孕妇及其家属均知情同意)的嗅球,消化成单个嗅鞘细胞后培养2周,细胞浓度约2×1010L-1。于患者相应脊髓损伤上端(平T11椎体)做1个锁孔,直径约3cm,在脊髓损伤部位与正常脊髓交界处沿中线于无血管区,分两点用4.5号细针共注入100μL(第1次手术)、50μL(第2次手术)嗅鞘细胞悬液,细胞数均为1×106个。第2次移植术前进行供、受体细胞HLA配型,术后口服FK506胶囊2mg,2次/d,共42d。结果:①第1次术后3个月,排尿能控制6h,双足运动功能改善,性功能改善,阴茎勃起功能改善,疼痛减轻。②第2次术后10d,双下肢双足皮肤泌汗功能改善,右下肢疼痛减轻,腹部皮肤感觉稍有好转,针刺觉左侧由术前T10皮节消失好转至T10减退。较第2次移植前椎旁躯体感觉诱发电位有所改善,双侧椎旁电位从T10下降到T12。结论:胚胎嗅鞘细胞二次移植能继续改善晚期脊髓损伤患者的神经功能。但移植的细胞数量、容积、注射点位置等需深入探讨。

关键词：脊髓损伤脊髓移植再手术嗅鞘细胞

Ecological and economical significance of homestead forest to the household of the offshore island in Bangladesh

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Journal of Forestry Research 2008年第4期19卷 307-310页

作者： Kazi mohammad masum mohammed Shafiul Alam m.m.Abdullah-Al-mamun Dulahazara Safari Park Wildlife Management and Nature Conservation DivisionBFRI Campus Institute of Forestry and Environmental Sciences Chittagong University Department of Environmental Technology Chittagong Polytechnic Institute

An explanatory survey was conducted to assess the contribution of plant diversity to the ecological and socio-economic condition of the rural household in the offshore island of Bangladesh. Assessment was done by means of multistage random sampling. The homestead sizes of the study area were classified into 3 groups viz, large （〉0.25 ha）, medium （0.05-0.25 ha） and small （〈0.05 ha） based on the result obtained from a preliminary survey, and a total of 45 homesteads, 15 from each group, were selected randomly for the study. The average annual income from homestead＇s plant diversity varied from Tk 5730.00 （US$95.5） to Tk 17500.00 （US$291.67）. The rural people were mainly dependent on their homegarden for woodfuel and nutritional requirement as forest was unavailable in the island. The rural people here also cultivated the plant species as a safety measure from frequent cyclone. Constraints hindering the development of homestead plantation were identified and suggestions were given such as the adequate supply of seedlings of fast growing native species and conservation of endangered species to meet the demand of the household as well as to keep ecological balance.

关键词： Bangladesh demand economical significance homestead forest offshore island

水介质中药物-AOT混合物的温度依赖的混合胶束化行为(英文)

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物理化学学报 2014年第4期30卷 699-707页

作者： RUB malik Abdul ASIRI Abdullah m KUmAR Dileep AZUm Naved KHAN Farah Chemistry Department King Abdulaziz University Center of Excellence for Advanced materials Research King Abdulaziz University Department of Chemistry Aligarh Muslim University

The mixed micellization behavior of an amphiphilic antidepressant drug amitriptyline hydrochloride(AmT)in the presence of the conventional anionic surfactant sodium bis(2-ethylhexyl)sulfosuccinate(AOT)was studied at five different temperatures and compositions by the conductometric *** critical micelle concentration(cmc)and critical micelle concentration at the ideal state(cmcid)values show mixed micelle formation between the components(i.e.,drug and AOT).The micellar mole fractions of the AOT(X1)values calculated using the Rubingh,motomura,and Rodenas models show a higher contribution of AOT in the mixed *** interaction parameter(β)is negative at all temperatures and the compositions show attractive interactions between the *** activity coefficients(f1and f2)calculated using the different proposed models are always less than unity indicating non-ideality in the ***ΔGmΘ values were found to be negative for all the binary mixed ***,ΔhmΘ values for the pure drug as well as the drug-AOT mixed systems are negative at lower temperatures(293.15-303.15 K)and positive at higher temperatures(308.15 K and above).TheΔSmΘ values are positive at all temperatures but their magnitude was higher at T=308.15 K and *** excess free energy of mixing(ΔGex)determined using the different proposed models also explains the stability of the mixed micelles compared to the pure drug(AmT)and surfactant micelles.

关键词：抗抑郁药物临床分析药物治疗浓度

Ocular Surgical Pathologies in Children Aged 0 to 15 Years in the Bartimée Ophthalmological Clinic in Conakry, Guinea

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Open Journal of Pathology 2022年第4期12卷 120-129页

作者： maxime Dantouma Sovogui Christophe Zoumanigui m’mah Aminata Bangoura mössö Sevogui Kokou Vonor Faculty of Health Sciences and Techniques University of Conakry Conakry Guinea Bartimée Ophthalmological Clinic Conakry Guinea Pediatrics Department of the Donka National Hospital Conakry Guinea KARA Regional Hospital Center in Togo Kara Togo

Context: Childhood eye health is a real public health problem in our context, the consequences of which go beyond vision, affecting education, social participation and future economic productivity. The aim was to study the frequency of ocular surgical pathologies in children aged 0 to 15 years. Patients and methodius: This study covered a 4 years period from January 1, 2016 to December 31, 2020. It was a retrospective study of a descriptive and analytical nature. It concerned all children aged 0 to 15 who had undergone surgery for ocular pathology during the study period and who were included in the operating room register. Results: Out of 4974 patients of all ages operated for ocular surgical pathology, 124 were children aged 0 to 15 years or 2.49%. The 9 - 12 age group was the most represented with 29.03%;the mean age was 7.3 years ± 4.6 with extremes of 3 months and 15 years. A male predominance was observed at 62.90%. Pathologies of the lens, cataract and eyelids, traumatic edema represented the most frequent eye conditions in our patients with respectively 51 cases or 41.13% in the right eye (od), 54 cases or 53.55% in the left eye (OG) and 14 cases or 11.29% in od and OG followed by endemic limboconjunctivitis of the tropics (LCET), 10 cases or 3.23%, in od and hemorrhage under conjunctival 13 cases or 10.48% in OG. Cataract surgery with the Technique manuel Small Incision Cataract Surgery + Implantation in the posterior chamber (mSICS + ICP) was the most used in 74% of cases. General anesthesia was the most widely used anesthetic method in 100% of cases. The clinical course was favorable at 45.97%. Conclusion: We note a relatively low hospital frequency of ocular surgical pathologies in children, with a male predominance. The early consultation period and the improvement of the technical platform could improve their management.

关键词： Surgeries Conakry Children Guinea Eyepieces

Estimating the prevalence of schistosomiasis japonica in China:a serological approach

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Infectious Diseases of Poverty 2018年第1期7卷 601-610页

作者： Xin-Yao Wang Jing Xu Song Zhao Wei Li Jian-Feng Zhang Jian He Ashley m.Swing Kun Yang Jiangsu Institute of Parasitic Diseases Yangxiang117#MeiyuanWuxi 214064JiangsuChina Key Laboratory on Technology for Parasitic Disease Prevention and Control Ministry of HealthJiangsu Provincial Key Laboratory on the Molecular Biology of ParasitesYangxiang117#MeiyuanWuxi 214064JiangsuChina Public Health Research Center Jiangnan UniversityJiangsuShengChina National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionShanghaiChina

Background:The prevalence of schistosomiasis japonica has decreased significantly,and the responses changing from control to elimination in Jiangsu Province,*** to estimate the change in prevalence of schistosomiasis using only serological data will be important and ***:We collected serum samples from 2011 to 2015 to build a serum bank from Dantu County of Jiangsu,*** samples were detected by enzyme-linked immunosorbent assay(ELISA),the positive rate and optical density(od)value were *** Bayesian model including the prior information of sensitivity and specificity of ELISA was established,and the estimated infection rates were obtained for different years,genders and age ***:There was no significant difference in the mean od between different years and genders,but there was a significant difference between the different age *** were statistically significant differences in the positive rate for different years and age groups,but no significant difference at different *** estimated infection rate for the five years was 1.288,1.456,1.032,1.485 and 1.358%,*** was no significant difference between different years and between genders,but a significant difference between different age ***:The risk of schistosomiasis transmission in this area still exists,and risk monitoring of schistosomiasis should be strengthened.

关键词： Enzyme-linked immunosorbent assay(ELISA) Bayesian statistics Schistosomiasis japonica Sensitivity Specificity Estimated infection rate