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| 1 | Interstitial cells of Cajal, the Maestro in health and disease显示文摘Interstitial cells of Cajal (ICC) are important players in the symphony of gut motility. They have a very signif icant physiological role orchestrating the normal peristaltic activity of the digestive system. They are the pacemaker cells in gastrointestinal (GI) muscles. Absence, reduction in number or altered integrity of the ICC network may have a dramatic effect on GI system motility. More understanding of ICC physiology will foster advances in physiology of gut motility which will help in a future breakthrough in the pharmacological interventions to restore normal motor function of GI tract. This mini review describes what is known about the physiologic function and role of ICCs in GI system motility and in a variety of GI system motility disorders. | Randa M Mostafa Yasser M Moustafa Hosam Hamdy | 2010 | World Journal of Gastroenterology2010，16，26： | 56 |
| 2 | Vibrational characteristics of piping system in air conditioning outdoor unit显示文摘The modal analysis of piping system in air conditioner (AC) outdoor unit is essential to investigate the vibration properties of the system. In view of the growing significance of numerical finite element (FE) model for vibration behaviour prediction, the AC piping elastic end support characterization has been explored. The axial and radial stiffness variables (ka, kr1, kr2) of the compressor-piping mounting are obtained and represented by dynamic stiffness of compressor grommet. They are obtained from dynamic load deflection test based on compressor operating condition such as excitation frequency and amplitude. The unknown stiffness variables of the other tube end (chassis-piping mounting) are determined by parameter fine tuning. An experimental modal analysis using impact hammer test has also been employed to determine the vibration properties such as natural frequencies, mode shapes and damping ratio of the piping structures. The modal parameters acquisition using SCADAS mobile acquisition system and LMS Impact Testing software is compared with the corresponding simulated modal properties using Abaqus. Most of the simulated natural frequencies achieve good correlation with the measured frequencies and it is reasonably a good prediction model to predict vibration behaviour of AC piping structures. | S. K. LOH W. F. FARIS M. HAMDI W. M. CHIN | 2011 | Science China(Technological Sciences)2011，54，5： | 17 |
| 3 | Trends and outcomes of pancreaticoduodenectomy for periampullary tumors: A 25-year single-center study of 1000 consecutive cases显示文摘AIM To evaluate the evolution, trends in surgical approaches a n d r e c o n s t r u c t i o n t e c h n i q u e s, a n d i m p o r t a n t lessons learned from performing 1000 consecutive pancreaticoduodenectomies(PDs) for periampullary tumors.METHODS This is a retrospective review of the data of all patients who underwent PD for periampullary tumor during the period from January 1993 to April 2017. The data were categorized into three periods, including early period(1993-2002), middle period(2003-2012), and late period(2013-2017).RESULTS The frequency showed PD was increasingly performed after the year 2000. With time, elderly, cirrhotic and obese patients, as well as patients with uncinate process carcinoma and borderline tumor were increasingly selected for PD. The median operative time and postoperative hospital stay decreased significantly over the periods. Hospital mortality declined significantly, from 6.6% to 3.1%. Postoperative complications significantly decreased, from 40% to 27.9%. There was significant decrease in postoperative pancreatic fistula in the second 10 years, from 15% to 12.7%. There was a significant improvement in median survival and overall survival among the periods.CONCLUSION Surgical results of PD significantly improved, with mortality rate nearly reaching 3%. Pancreatic reconstruction following PD is still debatable. The survival rate was also improved but the rate of recurrence is still high, at 36.9%. | ayman el nakeeb waleed askar ehab atef ehab el hanafy ahmad m sultan tarek salah ahmed shehta mohamed el sorogy emad hamdy mohamed el hemly ahmed a el-geidi tharwat kandil mohamed el shobari talaat abd allah amgad fouad mostafa abu zeid ahmed abu el eneen nabil gad el-hak gamal el ebidy omar fathy ahmed sultan mohamed abdel wahab | 2017 | World Journal of Gastroenterology2017，23，38： | 15 |
| 4 | Observer-based Adaptive Fuzzy Control for a Class of Nonlinear Time-delay Systems显示文摘An observer-based adaptive fuzzy control is presented for a class of nonlinear systems with unknown time delays. The state observer is first designed, and then the controller is designed via the adaptive fuzzy control method based on the observed states. Both the designed observer and controller are independent of time delays. Using an appropriate Lyapunov-Krasovskii functional, the uncertainty of the unknown time delay is compensated, and then the fuzzy logic system in Mamdani type is utilized to approximate the unknown nonlinear functions. Based on the Lyapunov stability theory, the constructed observer-based controller and the closed-loop system are proved to be asymptotically stable. The designed control law is independent of the time delays and has a simple form with only one adaptive parameter vector, which is to be updated on-line. Simulation results are presented to demonstrate the effectiveness of the proposed approach. | Hassan A. Yousef Mohamed Hamdy | 2013 | International Journal of Automation and computing2013，10，4： | 15 |
| 5 | 卒中后口咽吞咽困难的治疗显示文摘 卒中患者吞咽困难的患病率正在逐渐增加,目前对吞咽困难的管理多采用多学科的管理方法.但是,在临床上普遍使用的治疗方法均缺乏证据基础,需要随机试验来证实其效果.这篇综述主要关注卒中后的口咽吞咽困难.神经科学与神经刺激研究的相关结果,为探讨吞咽及卒中后吞咽恢复机制提供了新的契机.经颅磁刺激研究的成果,为临床使用这一方法促进卒中后口咽吞咽困难的恢复提供了坚实的基础.…… | Vanoo Jayasekeran Emilia Michou Shaheen Hamdy 张婧 | 2007 | 中国卒中杂志2007，2，3： | 14 |
| 6 | Cropland redistribution to marginal lands undermines environmental sustainability显示文摘Cropland redistribution to marginal land has been reported worldwide;however,the resulting impacts on environmental sustainability have not been investigated sufficiently.Here we investigated the environmental impacts of cropland redistribution in China.As a result of urbanization-induced loss of high-quality croplands in south China(~8.5 t ha^(-1)),croplands expanded to marginal lands in northeast(~4.5 t ha^(-1)) and northwest China(~2.9 t ha^(-1)) during 1990-2015 to pursue food security.However,the reclamation in these low-yield and ecologically vulnerable zones considerably undermined local environmental sustainability,for example increasing wind erosion(+3.47%),irrigation water consumption(+34.42%),fertilizer use(+20.02%) and decreasing natural habitats(-3.11%).Forecasts show that further reclamation in marginal lands per current policies would exacerbate environmental costs by 2050.The future cropland security risk will be remarkably intensified because of the conflict between food production and environmental sustainability.Our research suggests that globally emerging reclamation of marginal lands should be restricted and crop yield boost should be encouraged for both food security and environmental benefits. | Wenhui Kuang Jiyuan Liu Hanqin Tian Hao Shi Jinwei Dong Changqing Song Xiaoyong Li Guoming Du Yali Hou Dengsheng Lu Wenfeng Chi Tao Pan Shuwen Zhang Rafiq Hamdi Zherui Yin Huimin Yan Changzhen Yan Shixin Wu Rendong Li Jiuchun Yang Yinyin Dou Wenbin Wu Liqiao Liang Bao Xiang Shiqi Yang | 2022 | National Science Review2022，9，1： | 13 |
| 7 | Dynamics of CO_2 Emission and Biochemical Properties of a Sandy Calcareous Soil Amended with Conocarpus Waste and Biochar显示文摘Biochar is a carbon-rich product obtained by biomass pyrolysis and considered a mean of carbon sequestration. In this research, a sandy calcareous soil from the Farm of the College of Food & Agriculture Sciences, King Saud University, Saudi Arabia, was amended with either woody waste of Conocarpus erectus L.(CW) or the biochar(BC) produced from CW at rates of 0(control), 10, 30 and 50 g kg-1. The effects of the amendments on soil p H, dissolved organic carbon(DOC), microbial biomass carbon(MBC), CO2 emission and metabolic quotient(q CO2) of the sandy calcareous soil were studied in a 60-d incubation experiment. The results showed that the addition of CW led to a significant decrease in soil p H compared to the control and the addition of BC. The CO2-C emission rate was higher in the first few days of incubation than when the incubation time progressed. The cumulative CO2-C emission from the soil amended with CW, especially at higher rates, was higher(approximately 3- to 6-fold) than that from the control and the soil amended with BC. The BC-amended soil showed significant increases in CO2-C emission rate during the first days of incubation as compared to the non-amended soil, but the increase in cumulative CO2-C emission was not significant after 60 d of incubation. On the other hand, CW applications resulted in considerably higher cumulative CO2-C emission, MBC and DOC than the control and BC applications. With the exception of 0 day(after 1 h of incubation), both CW and BC applications led to lower values of q CO2 as compared to the control. The power function kinetic model satisfactorily described the cumulative CO2-C emission. Generally, the lowest values of CO2 emission were observed in the soil with BC, suggesting that the contribution of BC to CO2 emission was very small as compared to that of CW. | Mohamed EL-MAHROUKY Ahmed Hamdy EL-NAGGAR Adel Rabie USMAN Mohammad Al-WABEL | 2015 | Pedosphere2015，25，1： | 11 |
| 8 | Lipoma within inverted Meckel’s diverticulum as a cause of recurrent partial intestinal obstruction and hemorrhage: A case report and review of literature显示文摘Lipoma within an inverted Meckel's diverticulum presen- ting with hemorrhage and partial intestinal obstruction is an exceptional clinical entity. We report a case of 47-year-old male with a history of recurrent episodes of partial intestinal obstruction and melena due to a subserosal lipoma located in the base of an inverted Meckel's diverticulum. According to our knowledge, this is the first case of a lipoma within a Meckel's diverticulum giving rise to this clinical scenario without the existence of heterotrophic gastric or pancreatic tissues. | Güldeniz Karadeniz Cakmak Ali Ugur Emre Oge Tascilar Sibel Bekta■ Bulent Hamdi Uan Oktay Irkorucu Kemal Karakaya Yucel Ustundag Mustafa Comert | 2007 | World Journal of Gastroenterology2007，13，7： | 11 |
| 9 | 基于随机森林模型的内陆干旱区植被指数变化与驱动力分析:以北天山北坡中段为例显示文摘全球变化背景下的干旱区植被变化受气候变化和人类活动双重影响。定量评价植被变化特征及其驱动机制,对监测干旱区区域生态环境变化,促进区域可持续发展有重要意义。由于复杂多样的人类活动难以量化,有关这方面的研究多局限于植被对气候变化的响应,而对人类活动影响考虑不足,导致关于这方面的认识存在较大的偏差和不确定性。该文首先提出与土地利用相关的人类活动量化表征方法;然后运用多元线性回归模型和随机森林模型中的较优模型,分析气候变化和具体的人类活动对北天山北坡中段归一化植被指数(NDVI)的影响。主要结果:(1) 2000–2015年期间北天山北坡中段年NDVI总体呈增加趋势;基于随机森林构建的NDVI与气候因子和人类活动的模型拟合精度明显优于多元线性回归模型,其决定系数(R2)至少提高了24%;(2)研究期内与耕地有关的人类活动对北天山北坡中段NDVI分布及时空变化的影响呈增加的特征,在2000–2015年期间人类活动对NDVI变化的贡献率为0.59,超过了气候因子。该项研究为气候变化和人类活动对植被的影响研究提供了新思路,也为干旱区生态环境保护和恢复提供了科学依据。 | 张文强 罗格平 郑宏伟 王浩 HAMDI Rafiq 何惠丽 蔡鹏 陈春波 | 2020 | 植物生态学报2020，44，11： | 11 |
| 10 | A combination therapy of ethanol injection and radiofrequency ablation under general anesthesia for the treatment of hepatocellular carcinoma显示文摘AIM: To summarize the effects of laparoscopic ethanol injection and radiofrequency ablation (L-EI-RFA), thora- coscopic (T-EI-RFA) and open-surgery assisted EI-RFA (O-EI-RFA) under general anesthesia for the treatment of hepatocellular carcinoma (HCC). METHODS: Time-lag performance of RFA after ethanol injection (Time-lag PEI-RFA) was performed in all cases. The volume of coagulated necrosis and the applied en- ergy for total and per unit volume coagulated necrosis were examined in the groups treated under general (group G) or local anesthesia (group L). RESULTS: The results showed that the total applied energy and the applied energy per unit volume of whole and marginal, coagulated necrosis were significantly larger in group G than those in the group L, resulting in a larger volume of coagulated necrosis in the group G. The rate of local tumor recurrence within one year was extremely low in group G. CONCLUSION: These results suggest that EI-RFA, un- der general anesthesia, may be effective for the treat- ment of HCC because a larger quantity of ethanol and energy could be applied during treatment under pain- free condition for the patients. | Kazutaka Kurokohchi Seishiro Watanabe Hirohito Yoneyama Akihiro Deguchi Tsutomu Masaki Takashi Himoto Hisaaki Miyoshi Hamdy Saad Mohammad Akira Kitanaka Tomohiko Taminato Shigeki Kuriyama | 2008 | World Journal of Gastroenterology2008，14，13： | 10 |
| 11 | Clinicopathological features and the outcome of surgical management for adenocarcinoma of the appendix显示文摘AIM:To present a comprehensive analysis of incidence,clinicopathological features,appropriateness of surgical procedures,and survival for adenocarcinoma of the appendix.METHODS:A retrospective case analysis was conducted for the 10-year period 1998-2008.All patients diagnosed with adenocarcinoma of the appendix were analyzed for their demographics details,clinical features,tumor incidence and characteristics,tumor stage,surgical procedures performed,and their survival.RESULTS:Nine thousand three hundred and twentythree patients underwent appendectomies during the study period,and of these,10 (0.1%:8 men and 2 women with a mean age of 53.1 years,age range 21-83 years) were found to have primary adenocarcinoma of the appendix.Appendicular neoplasia was not suspected pre-operatively in any of the patients.Six (60%) patients underwent secondary right hemicolectomy.Four (40%) cases had appendectomy alone,and two of them died,whereas all those who underwent right hemicolectomy are alive and disease free.Five (50%) were reported to have grade 1 disease,three (30%) grade 2,and two (20%) grade 3 with mean survival of 34,48,and 22 mo,respectively.Six (60%) patients presented with advanced disease (Duke's C and D).At the end of follow up (mean period:37.9 mo),eight patients are alive and disease free at the end of follow up.Overall mean survival was 36.3 mo (conf idence interval;16%-56%) with 41.3 and 16 mo for men and women,respectively.Mean survival for those with and without lymph node involvement was 33.6 and 40.2 mo,respectively.Right hemicolectomy gave better results than appendectomy alone,although the difference was not statistically signif icant due to the small number of cases.CONCLUSION:Adenocarcinoma of the appendix is extremely rare neoplasm with varied presentations,and is usually advanced when diagnosed.Right hemicolectomy is the treatment of choice for such tumors. | Salman Yousuf Guraya Hamdi Hameed Almaramhy | 2011 | World Journal of Gastrointestinal Surgery2011，3，1： | 10 |
| 12 | Clinical correlates of common corneal neovascular diseases: a literature review显示文摘A large subset of corneal pathologies involves the formation of new vessels(neovascularization), leading to compromised visual acuity. This article aims to review the clinical causes and presentations of corneal neovascularization(CNV) by examining the mechanisms behind common CNV-related corneal pathologies, with a particular focus on herpes simplex stromal keratitis,contact lenses-induced keratitis and CNV secondary to keratoplasty. Moreover, we reviewed CNV in the context of different types of corneal transplantation and keratoprosthesis, and summarized the most relevant treatment available so far. | Nizar Saleh Abdelfattah Mohamed Amgad Amira A Zayed Hamdy Salem Ahmed E Elkhanany Heba Hussein Nawal Abd El-Baky | 2015 | International Journal of Ophthalmology(English edition)2015，8，1： | 10 |
| 13 | Resistin is not an appropriate biochemical marker to predict severity of acute pancreatitis:A case-controlled study显示文摘AIM:To assess levels of serum resistin upon hospital admission as a predictor of acute pancreatitis(AP) severity.METHODS:AP is both a common and serious disease,with severe cases resulting in a high mortality rate.Several predictive inflammatory markers have been used clinically to assess severity.This prospective study collected data from 102 patients who were diagnosed with an initial acute biliary pancreatitis between March 2010 and February 2013.Measurements of body mass index(BMI) and waist circumference(WC) were obtained and serum resistin levels were analyzed at the time of hospital admission using enzyme-linked immunosorbent assay.Additionally,resistin levels were measured from a control group after matching gender,BMI and age.RESULTS:A total of 102 patients(60 females and 42 males) were diagnosed with acute gallstone-induced pancreatitis.The mean age was 45 years,and mean BMI value was 30.5 kg/m2(Obese,class?Ⅰ).Twentytwo patients(21.6%) had severe AP,while eighty-eight patients had mild pancreatitis(78.4%).Our results showed that BMI significantly correlated with pancreatitis severity(P = 0.007).Serum resistin did not correlate with BMI,weight or WC.Furthermore,serum resistin was significantly higher in patients with AP compared to control subjects(P < 0.0001).The mean resistin values upon admission were 17.5 ng/mL in the severe acute biliary pancreatitis group and 16.82 ng/mL in the mild AP group(P = 0.188),indicating that resistin is not an appropriate predictive marker of clinical severity.CONCLUSION:We demonstrate that obesity is a risk factor for developing severe AP.Further,although there is a correlation between serum resistin levels and AP at the time of hospital admission,resistin does not adequately serve as a predictive marker of clinical severity. | Hamdi Al-Maramhy Abdelrahman I Abdelrahman Samer Sawalhi | 2014 | World Journal of Gastroenterology2014，20，41： | 10 |
| 14 | Post-endoscopic retrograde cholangiopancreatography pancreatitis: Risk factors and predictors of severity显示文摘AIM To detect risk factors for post-endoscopic retrograde cholangiopancreatography(ERCP) pancreatitis(PEP) and investigate the predictors of its severity.METHODS This is a prospective cohort study of all patients who underwent ERCP.Pre-ERCP data,intraoperative data,and post-ERCP data were collected.RESULTS The study population consisted of 996 patients.Their mean age at presentation was 58.42(± 14.72) years,and there were 454 male and 442 female patients.Overall,PEP occurred in 102(10.2%) patients of the study population; eighty(78.4%) cases were of mild to moderate degree,while severe pancreatitis occurred in 22(21.6%) patients.No hospital mortality was reported for any of PEP patients during the study duration.Age less than 35 years(P = 0.001,OR = 0.035),narrower common bile duct(CBD) diameter(P = 0.0001) and increased number of pancreatic cannulations(P = 0.0001) were independent risk factors for the occurrence of PEP.CONCLUSION PEP is the most frequent and devastating complication after ERCP.Age less than 35 years,narrower median CBD diameter and increased number of pancreaticcannulations are independent risk factors for the occurrence of PEP.Patients with these risk factors are candidates for prophylactic and preventive measures against PEP. | Ayman El Nakeeb Ehab El Hanafy Tarek Salah Ehab Atef Hosam Hamed Ahmad M Sultan Emad Hamdy Mohamed Said Ahmed A El Geidie Tharwat Kandil Mohamed El Shobari Gamal El Ebidy | 2016 | World Journal of Gastrointestinal Endoscopy2016，8，19： | 10 |
| 15 | Protective effects of erythropoietin against acute lung injury in a rat model of acute necrotizing pancreatitis显示文摘瞄准:为了调查外长的 erythro-poietin (EPO ) 的效果,在钠 taurodeoxycholate- 的一个试验性的模型的尖锐的肺损害(ALI ) 上的管理导致了尖锐引起坏死胰腺炎(ANP ) 。方法:47 只男 Wistar 白鼠随机被划分成 7 个组:假冒的组(n = 5 ) , 3 个 ANP 组(n = 7 各个) 并且 3 个 EPO 组(n = 7 各个) 。ANP 被导致由后退进胆总管的 5% 钠 taurodeoxycholate 的注入。在 EPO 组的老鼠收到了 1000 U/kg 肌内的 EPO 立即在 ANP 的正式就职以后。在 ANP 组的老鼠相反被给 1 mL 生理盐水。所有动物被牺牲在手术后 24 h, 48 h 和 72 h。浆液 amilase, IL-2, IL-6 和肺织物 malondialdehyde (MDA ) 被测量。胸膜渗漏体积和肺 / 身体重量(LW/BW ) 比率是计算的。TNF-alpha, IL-2 和 IL-6 的织物层次组织化学地是屏蔽免疫。另外, ox-LDL 累积与免疫者荧光灯的染色被估计。在肺的组织病理学说的改变也被获得。结果:吝啬的胸膜渗漏体积,计算 LW/BW 比率,浆液 IL-6 和肺织物 MDA 层次比在 ANP 组在 EPO 组是显著地更低的。不,统计上,有效差量在这些组之中在浆液或 IL-2 的织物价值被观察。当时, ox-LDL 的肿瘤坏死 factor-alpha (TNF-alpha ) 和 IL-6 和累积的水平在 ANP 组的肺纸巾是明显的与 EPO 组相比,特别地在 72 h。组织病理学说的评估在外长的 EPO 管理以后在肺损害参数证实了改进,特别地在 48 h 和 72 h。结论:EPO 管理由禁止 polymorphonuclear (PMNL ) 在 ALI 参数导致重要减少累积,减少专业版的层次在每氧化的循环,保存微脉管的内皮房间正直和减少的氧化联系压力的类脂化合物的煽动性的 cytokines 并且因此,能在导致 ANP 的 ALI 被认为是一个 cytoprotective 代理人。 | Oge Tascilar Güldeniz Karadeniz Cakmak Ishak Ozel Tekin Ali Ugur Emre Bulent Hamdi Ucan Burak Bahadir Serefden Acikgoz Oktay Irkorucu Kemal Karakaya Hakan Balbaloglu Gürkan Kertis Handan Ankarali Mustafa Comert | 2007 | World Journal of Gastroenterology2007，13，46： | 8 |
| 16 | 基于大数据的全球城市扩展与土地覆盖动态遥感制图显示文摘Humans deeply influence the urbanizing of earth’s surface system in an exacerbating manner across space and time[1].Around the globe,urban land-use/cover changes reflect the intensities of human activities and land shifts from nature or semi-nature lands to man-made–dominated surfaces[2]. | 匡文慧 杜国明 陆灯盛 窦银银 李孝永 张澍 迟文锋 董金玮 陈广生 尹哲睿 潘涛 Rafiq Hamdi 侯亚丽 陈春阳 李晗 苗晨 | 2021 | Science Bulletin2021，66，4： | 8 |
| 17 | 虚拟制造环境中虚拟手的行为构造显示文摘为了实现虚拟制造环境中智能高效的虚拟手,改善目前主流的依赖对用户手抓握动作跟踪的状况,提出一种适用于虚拟制造环境的虚拟手自主行为构造方法.通过在虚拟手结构模型上增加感知环设计,构建虚拟手的感知能力;结合文中提出的虚拟手三阶段感知算法实现虚拟手的自适应行为机制,极大地减轻了操作者的认知和操作负载;通过构造虚拟手手势集和手势状态转换模型,实现了虚拟手在复杂零件表面的连续抓握操作.文中还重点研究了复杂零件表面虚拟手的连续抓握的行为机制和相关算法.实验结果表明,文中的虚拟手具有很好的几何真实感和行为真实感;提出的方法具有良好的可用性、可靠性和实时性. | 蔡娴娟 程成 Alhazmi Marwah Mostafa Hamdy Salem MongHeng Ear | 2015 | 计算机辅助设计与图形学学报2015，27，3： | 8 |
| 18 | Appendiceal mucocele: Case reports and review of current literature显示文摘The mucocele of the appendix is an uncommon disorder which is often asymptomatic but sometimes causes acute appendicitis-like symptoms. Sometimes, patients with mucocele can present with confusing symptoms. Preoperative suspicion and diagnosis of appendiceal mucocele are important. Ultrasonography and computed tomography are useful tools for the diagnosis of appendiceal mucocele. It may be also recognised by colonoscopy as a smooth submucosal lesion of the cecum. Optima management of the mucocele could be achieved through accurate preoperative diagnosis. Preoperative diagnosis is a major component for minimizing intra-operative and post-operative complications. We herein report five cases and discuss the diagnostic methods and surgical treatment. | Kemal Karakaya Figen Barut Ali Ugur Emre Hamdi Bulent Ucan Guldeniz Karadeniz Cakmak Oktay Irkorucu Oge Tascilar Yucel Ustundag Mustafa Comert | 2008 | World Journal of Gastroenterology2008，14，14： | 8 |
| 19 | Conocarpus Biochar Induces Changes in Soil Nutrient Availability and Tomato Growth Under Saline Irrigation显示文摘Thermally modified organic materials commonly known as biochar have gained popularity of being used as a soil amendment.Little information, however, is available on the role of biochar in alleviating the negative impacts of saline water on soil productivity and plant growth. This study, therefore, was conducted to investigate the effects of Conocarpus biochar(BC) and organic farm residues(FR) at different application rates of 0.0%(control), 4.0% and 8.0%(weight/weight) on yield and quality of tomatoes grown on a sandy soil under drip irrigation with saline or non-saline water. The availability of P, K, Fe, Mn, Zn and Cu to plants was also investigated. The results demonstrated clearly that addition of BC or FR increased the vegetative growth, yield and quality parameters in all irrigation treatments. It was found that salt stress adversely affected soil productivity, as indicated by the lower vegetative growth and yield components of tomato plants. However, this suppressing effect on the vegetative growth and yield tended to decline with application of FR or BC, especially at the high application rate and in the presence of biochar. Under saline irrigation system, for instance, the total tomato yield increased over the control by 14.0%–43.3% with BC and by 3.9%–35.6% with FR. These could be attributed to enhancement effects of FR or BC on soil properties, as indicated by increases in soil organic matter content and nutrient availability. Therefore, biochar may be effectively used as a soil amendment for enhancing the productivity of salt-affected sandy soils under arid conditions. | Adel Rabie A.USMAN Mohammad I.AL-WABEL Yong S.OK Abdulaziz AL-HARBI Mahmoud WAHB-ALLAH Ahmed Hamdy EL-NAGGAR Mahtab AHMAD Abdulelah AL-FARAJ Abdulrasoul AL-OMRAN | 2016 | Pedosphere2016，26，1： | 8 |
| 20 | Modeling of secondary treated wastewater disinfection by UV irradiation: Effects of suspended solids content显示文摘This work aimed to study UV-resistant strains of Pseudomonas aeruginosa, to propose a formulation of the kinetics of secondary treated wastewater disinfection and to underline the influence of suspended solids on the inactivation kinetics of these strains. Some investigations were carried out for the validation of some simulation models, from the simplest, the kinetics model of Chick-Watson reduced to first order, to rather complex models such as multi-kinetic and Collins-Selleck models. Results revealed that the involved processes of UV irradiation were too complex to be approached by a simplified formulation, even in the case of specific strains of microorganisms and the use of nearly constant UV radiation intensity. In fact, the application of Chick-Watson model in its original form is not representative of the kinetics of UV disinfection. Modification, taking into account the speed change during the disinfection process, has not significantly improved results. On the other hand, the application of Collins-Selleck model demonstrates that it was necessary to exceed a least dose of critical radiation to start the process of inactivation. To better explain the process of inactivation, we have assumed that the action of disinfectant on the survival of lonely microorganisms is faster than its action on suspended solids protected or agglomerated to each others. We can assume in this case the existence of two inactivation kinetics during the processes (parallel and independent) of the first-order. For this reason, the application of a new kinetic model by introducing a third factor reflecting the influence of suspended solids in water on disinfection kinetics appeared to be determinant for modeling UV inactivation of P. aeruginosa in secondary treated wastewater. | Mounaouer Brahmi Noureddine Hamed Belhadi Helmi Hamdi Abdennaceur Hassen | 2010 | Journal of Environmental Sciences2010，22，8： | 8 |
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