检索结果-南通市图书馆

A Rare Case of Pyogenic Spondylodiscitis after Laparoscopic Sacro-Hysteropexy

在线全文

学校读者我要写书评

暂无评论

Open Journal of Obstetrics and Gynecology 2022年第6期12卷 510-514页

作者： Adel Mohamed Ismail Haitham Abdel wahab Said Shaban Gyneoncology Department Ismailia Teaching Oncology Hospital Ismailia Egypt Gyneoncology Department El-Galaa Maternity Teaching Hospital Cairo Egypt

Introduction: Pyogenic spondylodiscitis is a rare and severe complication of laparoscopic Sacro-Hysteropexy with a polypropylene mesh. The proper and early diagnosis following by medical treatment, if not responding, so we shift to surgical approach is very important to prevent irreversible complications. Case Presentation: A female patient 32 years old admitted to our Gyne-Oncology unit in El-Galaa Maternity Teaching Hospital, in Jan 2022 with a significant weakness in both lower limbs up to complete paralysis, by history she has done a laparoscopic Hystero-Sacro-Pexy with synthetic polypropylene mesh 2 weeks ago, all investigations were normal except WBCs was 14,000 and CRP was 28, MRI Finding was an Encysted collection likely seroma at sacral promontory 4 × 3 cm, surgical removal of the mesh was done, the mesh related to the sacrum was severely infected and pus formation was noticed, 4 hours after the operation there was a Dramatic response and complete resolution of symptoms within few days. Conclusion: Because of the rarity of this complication in the literature, Spondylodiscitis awareness of symptoms, timely diagnosis, and treatment including surgical removal of synthetic mesh after Sacro-Pexy are fundamental to prevent irreversible complications.

关键词： Spondylodiscitis Pyogenic Sacro-Pexy Pecto-Pexy Mesh

Radionuclides measurements and mineralogical studies on beach sands, East Rosetta Estuary, Egypt

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal Of Geochemistry 2013年第2期32卷 146-156页

作者： Abd El wahab M. El Nahas H.A. Physics Department Faculty of Women for Arts Science and Education Ain Shams University Cairo P.O 11757 Egypt Nuclear Materials Authority Cairo P.O. Box 530 Egypt

Radiometric measurements were carried out for the beach sands from East Rosetta estuary to determine the activity concentrations of 238 U, 226 Ra, 232 Th, and 40 K, using a Hyper Pure Germanium spectrometer, to estimate the dose rates and radiation hazard indices. The average specific activities are 778.20 Bq/kg for 238 U; 646.89 Bq/kg for 226 Ra; 621.92 and 627.85 Bq/kg for the 222 Rn daughters 214 Pb and 214 Bi respectively. The average specific activity of 232 Th is 1510.25 Bq/kg, while the calculated specific activity for 40 K has an average of 8.41 Bq/kg. The average specific activity of 235 U is 38.61 Bq/kg. The average absorbed dose rate is 1211.36 nGy/h, 20 times higher than the estimated average global primordial radiation of 60 nGy/h and 6 times higher than that of the world range (10-200 nGy/h). The radium equivalent (Ra eq ) values are from 6 to 9 times the recommended value. The internal and external hazard indices (H int , H ex ) indicate that their values are from 6 to 11 times the permissible values of these indices. These higher values may be due to the presence of economic heavy minerals containing radionuclides as zircon and monazite as well as some trace minerals, thorite and uranothorite. The mineralogical study indicates the beach sands contain heavy minerals, zircon, monazite, rutile, ilmenite, leucoxene, magnetite and garnet. The average abundance of zircon is 0.175 wt% ranging from 0.125 wt% to 0.239 wt%, while it is 0.004wt% ranging from 0.001 wt% to 0.007 wt% for monazite. The average abundance is 0.087 wt% for rutile; 2.029 wt% for ilmenite; 1.084 wt% for magnetite; 0.384 wt% for leucoxene and 0.295 wt% for garnet.

关键词：放射性核素海滩砂矿物学核素测量河口平均丰度埃及辐射测量

Application of automated image analysis to the identification and extraction of recyclable plastic bottles

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第6期10卷 794-799页

作者： Edgar SCAVINO Dzuraidah Abdul wahab Aini HUSSAIN Hassan BASRI Mohd Marzuki MUSTAFA Faculty of Engineering Universiti Kebangsaan Malaysia

An experimental machine vision apparatus was used to identify and extract recyclable plastic bottles out of a conveyor belt. Color images were taken with a commercially available Webcam, and the recognition was performed by our homemade software, based on the shape and dimensions of object images. The software was able to manage multiple bottles in a single image and was additionally extended to cases involving touching bottles. The identification was fulfilled by comparing the set of measured features with an existing database and meanwhile integrating various recognition techniques such as minimum distance in the feature space, self-organized maps, and neural networks. The recognition system was tested on a set of 50 different bottles and provided so far an accuracy of about 97% on bottle identification. The extraction of the bottles was performed by means of a pneumatic arm, which was activated according to the plastic type; polyethylene-terephthalate (PET) bottles were left on the conveyor belt, while non-PET bottles were extracted. The software was designed to provide the best compromise between reli-ability and speed for real-time applications in view of the commercialization of the system at existing recycling plants.

关键词：识别技术图像分析实时应用提取塑料国产软件识别系统 PET瓶

Measuring quality of experience for 360-degree videos in virtual reality

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2020年第10期63卷 108-122页

作者： Muhammad Shahid ANWAR Jing WANG Asad ULLAH wahab KHAN Sadique AHMAD Zesong FEI School of Information and Electronics Beijing Institute of Technology Faculty of Engineering Sciences and Technology Iqra University

In recent years, we witness dramatic growing attention in immersive media technologies like 360-degree videos and virtual reality(VR). However, measuring the quality-of-experience(QoE) for 360-degree VR videos is not a trivial task. Streaming such videos to head mounted displays(HMDs) is extremely bandwidth-demanding when compared to traditional 2D videos. In HTTP adaptive streaming, QoE tends to deteriorate significantly during fluctuating network conditions, which results in various bitrate changes and causes multiple stalling events during playback. Thus, understanding how the human visual system perceives 360-degree video with the effect of stalling and different bitrate levels becomes inevitable. In this paper, we investigate the impact of stalling on users QoE under different bitrate levels and the interaction between stalling event and bitrate level for 360-degree videos in VR. To aim this, we first build a 360-degree videos database by encoding videos in three different bitrate levels(1, 5, and 15 Mbps) with 4 K resolutions(3840×1920 pixels). We then simulate various stalling events in the videos and conduct a subjective experiment in a virtual reality environment to investigate the human responses. Finally, we use a Bayesian method to estimate and predict the QoE while measuring the quality drop owing to various stalling events and bitrate changes. Proposed solution and prediction results show a strong dependency between playback stalling and bitrate of 360-degree video in VR. Stalling always impacts the QoE of 360-degree videos, but the strength of this negative impact depends on the video bitrate level. The adverse effect of stalling events is more profound when bitrate level approaches to the high and low end, which is in close agreement with subjective opinion.

关键词： quality of experience stalling virtual reality 360-degree video

Design, mechanism, delivery and therapeutics of canonical and Dicer-substrate siRNA

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Pharmaceutical Sciences 2019年第5期14卷 497-510页

作者： Maria Abdul Ghafoor Raja Haliza Katas Muhammad wahab Amjad Department of Pharmaceutics Faculty of PharmacyNorthern Border UniversityRafha73211Saudi Arabia Centre for Drug Delivery Research Faculty of PharmacyUniversiti Kebangsaan MalaysiaKuala Lumpur50300Malaysia

Upon the discovery of RNA interference(RNAi),canonical small interfering RNA(si RNA) has been recognized to trigger sequence-specific gene silencing. Despite the benefits of si RNAs as potential new drugs,there are obstacles still to be overcome,including off-target effects and immune stimulation. More recently,Dicer substrate si RNA(Dsi RNA) has been introduced as an alternative to si RNA. Similarly,it also is proving to be potent and target-specific,while rendering less immune stimulation. Dsi RNA is 25–30 nucleotides in length,and is further cleaved and processed by the Dicer enzyme. As with si RNA,it is crucial to design and develop a stable,safe,and efficient system for the delivery of Dsi RNA into the cytoplasm of targeted cells. Several polymeric nanoparticle systems have been well established to load Dsi RNA for in vitro and in vivo delivery,thereby overcoming a major hurdle in the therapeutic uses of Dsi RNA. The present review focuses on a comparison of si RNA and Dsi RNA on the basis of their design,mechanism,in vitro and in vivo delivery,and therapeutics.

关键词： RNA interference Drug delivery system Polymeric nanoparticles Gene silencing Gene carrier Non-viral vector

Histopathological alterations in the liver and intestine of Nile tilapia Oreochromis niloticus exposed to long-term sublethal concentrations of cadmium chloride

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Oceanology and Limnology 2015年第4期33卷 846-852页

作者： YOUNIS Elsayed ABDEL-WARITH Abdel-wahab AL-ASGAH Nasser EBAID Hossam Department of Zoology College of Science King Saud University Department of Animal Production Faculty of Agriculture Al-Azhar University Department of Zoology College of Science El-Minia University

Fingerlings of Nile tilapia Oreochromis niloticus were exposed to 1.68, 3.36, and 5.04 mg/L cadmium(as CdCl2), which represent 10%, 20%, and 30% of their previously determined 96-h LC5 0. After exposure for 20 days, sections of the liver and intestine of treated fish were examined histologically. Histopathological changes varied from slight to severe structural modification, depending on the exposure concentration. The hepatic tissues of fish exposed to 10% LC 50 showed markedly increased vacuolation of the hepatocytes and coarse granulation of their cytoplasm. Abundant erythrocytic infiltration among the hepatocytes was observed in fish exposed to 20% LC5 0. In the intestinal tissues of fish exposed to all doses, goblet cells proliferated and were greatly increased in size, the longitudinal muscularis mucosa was disturbed and, in the crypts of the sub-mucosal layer, apoptosis increased, indicated by large numbers of degenerated nuclei. Large numbers of inflammatory cells and dilated blood vessels were observed in the intestine of the group treated with 30% LC5 0.

关键词：尼罗罗非鱼亚致死剂量氯化镉组织病理学浓度肠道肝脏 LC50

Removal of arsenite by reductive precipitation in dithionite solution activated by UV light

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2018年第12期30卷 168-176页

作者： Bahngmi Jung Aya Safan Yuhang Duan Vishakha Kaushik Bill Batchelor Ahmed Abdel-wahab Chemical Engineering Program Texas A&M University at Qatar Education City Zachry Department of Civil Engineering Texas A&M University College Station

This study investigates the removal of arsenite（As（III）） from water using dithionite activated by UV light. This work evaluated the removal kinetics of As（III） under UV light irradiation as affected by dithionite dose and light intensity, and characterized the nature of the precipitated solids using XPS and SEM-EDS. Photolysis of dithionite was observed by measuring dithionite concentration using UV absorbance at 315 nm. This study also investigated the effect of UV light path length on soluble As concentrations to understand resolubilization mechanisms. Total soluble As concentrations were observed to decrease with reaction time due to reduction of arsenite to form solids having a yellow-orange *** removal mechanism was found to be reductive precipitation that formed solids of elemental arsenic or arsenic sulfide. However, these solids were observed to resolubilize at later times after dithionite had been consumed. Resolubilization of As was prevented and additional As removal was obtained by frequent dosing of dithionite throughout the experiment. As（III） removal is attributed to photolysis of dithionite by UV light and production of reactive radicals that reduce As（III） and convert it to solid forms.

关键词： Arsenite Sodium dithionite Reductive precipitation and Ultraviolet light

Seaweed farming for food and nutritional security,climate change mitigation and adaptation,and women empowerment:A review

在线全文

学校读者我要写书评

暂无评论

Aquaculture and Fisheries 2023年第5期8卷 463-480页

作者： Fahmida Sultana Md Abdul wahab Md Nahiduzzaman Md Mohiuddin Mohammad Zafar Iqbal Abrar Shakil Abdullah-Al Mamun Md Sadequr Rahman Khan LiLian Wong Md Asaduzzaman Department of Marine Bioresource Science Faculty of FisheriesChattogram Veterinary and Animal Sciences UniversityKhulshiChattogram4225Bangladesh ECOFISH-II Activity WorldFishBangladesh and South Asia OfficeBananiDhaka1213Bangladesh Department of Fisheries and Marine Science Noakhali Science and Technology UniversityNoakhali3814Bangladesh Institute of Marine Biotechnology Universiti Malaysia TerengganuKuala-TerengganuTerengganu21030Malaysia

Seaweed is a promising marine macroalgae of the millennium,providing various ecological,social,and economic *** present,seaweed production reached 35.8 million t from farming,accounting for 97%of global seaweed output,with a world market of US$11.8 *** are an excellent source of nutritious human food because of their low lipid content,high minerals,fibers,polyunsaturated fatty acids,polysaccharides,vitamins,and bioactive *** seaweed sub-products offer unique properties to develop various functional foods for the food processing *** the perspective of climate change mitigation,seaweed farms absorb carbon,serve as a CO_(2)sink and reduce agricultural emissions by providing raw materials for biofuel production and livestock *** farming system also helps in climate change adaptation by absorbing wave energy,safeguarding shorelines,raising the pH of the surrounding water,and oxygenating the waters to minimize the impacts of ocean acidification and hypoxia on a localized ***,it contributes substantially to the sustainable development of the economic condition of coastal women by providing livelihood opportunities and ensuring financial *** review paper highlights the significance of seaweed farming in global food and nutritional security,mitigation and adaptation to global climate change,and women empowerment within a single *** review paper also outlined the major issues and challenges of seaweed farming for obtaining maximum benefits in these *** main challenges of making seaweed as a staple diet to millions of people include producing suitable species of seaweeds,making seaweed products accessible,affordable,nutritionally balanced,and attractive to the *** food products must be developed from seaweeds that may be considered equivalent to the foods consumed by humans *** of effective marine spatial planning to avoid user conflicts is vital for expanding the seawee

关键词： Seaweed Functional food Nutritional security Blue carbon Climate change adaptation Women empowerment

Bach-Einstein Gravitational Field Equations as a Perturbation of Einstein Gravitational Field Equations

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics 2022年第12期13卷 1022-1032页

作者： Fathy Ibrahim Abdel-Bassier Ahmed Fouad Abdel-wahab Fayrouz Mostafa Abdel-Maboud Mathematics Department Faculty of Science Minia University El-Minia Egypt Higher Institute for Engineering and Technology El-Minia Egypt

The Bach equations are a version of higher-order gravitational field equations, exactly they are of fourth-order. In 4-dimensions the Bach-Einstein gravitational field equations are treated here as a perturbation of Einstein’s gravity. An approximate inversion formula is derived which admits a comparison of the two field theories. An application to these theories is given where the gravitational Lagrangian is expressed linearly in terms of R, R2, |Ric|2, where the Ricci tensor Ric = Rαβdxαdxβ is inserted in some formulas which are of geometrical or physical importance, such as;Raychaudhuri equation and Tolman’s formula.

关键词： Gravitational Theory Higher Order Gravity Buchdahl’s Formula Bach-Einstein Gravitational Field Equations Raychaudhuri Equation Tolman’s Formula