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Ileal-anal pouches: A review of its history, indications, and complications

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World Journal of Gastroenterology 2019年第31期25卷 4320-4342页

作者： Kheng-Seong Ng Simon Joseph Gonsalves peter michael sagar John Goligher Colorectal Unit St.James’s University HospitalLeeds LS9 7TFUnited Kingdom Institute of Academic Surgery University of SydneyCamperdownNew South Wales 2050Australia Department of Colorectal Surgery Huddersfield Royal InfirmaryCalderdale and Huddersfield NHS Foundation TrustHuddersfield HD3 3EAUnited Kingdom

The ileal pouch anal anastomosis(IPAA)has revolutionised the surgical management of ulcerative colitis(UC)and familial adenomatous polyposis(FAP).Despite refinement in surgical technique(s)and patient selection,IPAA can be associated with significant *** the IPAA celebrated its 40th anniversary in 2018,this review provides a timely outline of its history,indications,and *** has undergone significant modification since *** both UC and FAP,IPAA surgery aims to definitively cure disease and prevent malignant degeneration,while providing adequate continence and avoiding a permanent *** majority of patients experience long-term success,but“early”and“late”complications are *** sepsis is a common early complication with far-reaching consequences of long-term pouch dysfunction,but prompt intervention(either radiological or surgical)reduces the risk of pouch *** in the absence of sepsis,pouch dysfunction is a longterm complication that may have a myriad of *** is a common cause that remains incompletely understood and difficult to manage at times.10%of patients succumb to the diagnosis of pouch failure,which is traditionally associated with the need for pouch *** review provides a timely outline of the history,indications,and complications associated with *** selection remains key,and contraindications exist for this surgery.A structured management plan is vital to the successful management of complications following pouch surgery.

关键词： Ileal pouch Restorative proctocolectomy Ulcerative colitis Crohn’s disease Familial adenomatous polyposis

An arrow in the quiver: evaluating the performance of Hyptis suaveolens(L.) Poit. in different light levels

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Ecological Processes 2024年第2期13卷 130-147页

作者： Kanhaiya Shah Gyan Prakash Sharma R.sagar Department of Environmental Studies University of Delhi Department of Botany Banaras Hindu University

Background Hyptis suaveolens（L.） Poit.,native to the American tropics,is a pantropical annual plant and a major invasive species throughout *** was anticipated that the availability of sunlight,coupled with its superior reproductive potential,persistent propagule bank,and dispersal ability,could lead to an increase in the growth and spread of this invader,thus potentially impeding herbaceous growth and diversity in non-native *** its ecological fitness and competitive performance will be useful to manage the spread of *** in natural ecosystems that are facing a wide range of anthropogenic *** The present study is a three-tier *** the first tier,a field study was conducted to assess the patterns of *** abundance and herbaceous species diversity in response to light availability(sun,842-1072μmol m-2s-1and shade 253-341 μmol m-2S-1) in the tropical dry deciduous ecosystems in the Vindhyan highlands,***,the impact of *** abundance on the resident native and non-native species abundance and diversity was also *** the second tier,a randomized common garden experiment was conducted to understand the trait fitness of *** in sun(940 μmol m-2s-1) and shade(300 μmol m-2s-1) *** the third tier,a plant growth chamber experiment with high-light(940 μmol m-2s-1) and low-light(300 μmol m-2s-1)treatments was done to learn how *** partitions its biomass between aboveground and belowground plant *** The field study indicated that the sunlit areas had a higher abundance of *** and a lower diversity of resident herbaceous species than the shaded *** common garden experiment showed that sun-dwelling *** individuals performed better in germinative,vegetative,eco-physiological,and reproductive traits than the shade-dwelling *** growth chamber experiment exhibited that plants grown in high-light environment had greater seed germi

关键词： Invasive species Native species Species diversity Life-history trait Oskar syndrome Plasticity index

Sintering temperature reflected cation distribution of Zn^(2+) substituted CoFe_2O_4

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Journal of Central South University 2013年第6期20卷 1469-1474页

作者： Sanjay R.Kamble sagar E.Shirsath S.m.Patange K.m.Jadhav Department of Physics SMDM college Spin Device Technology centre Faculty of EngineeringShinshu University materials Research Laboratory Srikrishna Mahavidyalaya GunjotiOmerga 413613India Department of Physics Dr.Babasaheb Ambedkar Marathwada University

The most remarkable effect in spinel ferrites is the strong dependence of properties on the state of structural disorder and,in particular,on the cation *** structural characterization of a Co-Zn ferrite nanoparticle sample was reported which prepared by wet chemical co-precipitation *** samples were sintered at three different temperatures viz.650℃,850℃ and 1050℃ for 12 *** structural details like:lattice constant and distribution of cations in the tetrahedral and octahedral interstitial voids have been deduced through X-ray diffraction (XRD) data *** constant was found to increase with the increase in Zn2+ ions and sintering *** intensity ratios of (220),(400),(440) planes were considered,as these reflections are sensitive to cations on the A and B *** agreement of the theoretical intensity ratio with the intensity ratio observed from XRD pattern supports the occupancy of Zn2+ ions and Co2+ ions on the octahedral and tetrahedral sites,respectively.

关键词： ferrite chemical synthesis sintering temperature cation distribution

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CFD analysis for mixing performance of different types of household biodigesters

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Clean Energy 2022年第2期6卷 325-334页

作者： sagar Shrestha Sunil Prasad Lohani Renewable and Sustainable Energy Laboratory Department of Mechanical EngineeringKathmandu UniversityNepal

Household biodigesters are self-mixing anaerobic digesters used mostly in rural areas of developing countries as a reliable source of clean cooking *** an efficient anaerobic digestion process,the mixing of slurry inside the digester is regarded as one of the most important *** this study,the mixing of slurry in three different designs of household digesters,namely the fixed-dome digester(GGC 2047 model),plug-flow digester and prefabricated plastic digester,are investigated and compared using compu-tational fluid dynamics.A 3D transient simulation is performed using a multiphase volume of fluid(VOF)model in Ansys^(■)Fluent release *** rheological properties of the feedstock are considered identical for all three *** volume of the plug-flow and prefabricated plastic digesters is designed to be 1 m^(3) while the volume of the GGC 2047 digester was 6 m^(3) as the standard size of the household *** regions inside the digester where the velocity of slurry ism/s are regarded as dead zones and the obtained results were analysed and compared using velocity patterns and dead-zone *** is found that the prefabricated plastic digester model has a relatively higher percentage of dead volume(74.6%)and the plug-flow digester has the lowest per-centage(54%)of dead volume among digesters that were compared in this *** study will serve as the basis for designers and researchers to improve the design of household digesters for better mixing performances.

关键词： household biodigesters dead zone CFD anaerobic digestion mixing biomass Ansys Fluent

Relative-Position Estimation Based on Loosely Coupled UWB–ImU Fusion for Wearable IoT Devices

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Computers, materials & Continua 2023年第4期75卷 1941-1961页

作者： A.S.m.Sharifuzzaman sagar Taein Kim Soyoung Park Hee Seh Lee Hyung Seok Kim Sejong University Seoul05006Korea Samsung Advanced Institute of Technology Suwon16678Korea

Relative positioning is one of the important techniques in collaborativerobotics, autonomous vehicles, and virtual/augmented reality (VR/AR)applications. Recently, ultra-wideband (UWB) has been utilized to calculaterelative position as it does not require a line of sight compared to a camerato calculate the range between two objects with centimeter-level ***, the single UWB range measurement cannot provide the relativeposition and attitude of any device in three dimensions (3D) because oflacking bearing information. In this paper, we have proposed a UWB-ImUfusion-based relative position system to provide accurate relative positionand attitude between wearable Internet of Things (IoT) devices in 3D. Weintroduce a distributed Euler angle antenna orientationwhich can be equippedwith the mobile structure to enable relative positioning. moving average andmin-max removing preprocessing filters are introduced to reduce the standarddeviation. The standard multilateration method is modified to calculate therelative position between mobile structures. We combine UWB and ImUmeasurements in a probabilistic framework that enables users to calculatethe relative position between two nodes with less error. We have carried outdifferent experiments to illustrate the advantages of fusing ImU and UWBranges for relative positioning systems. We have achieved a mean accuracy of0.31m for 3D relative positioning in indoor line of sight conditions.

关键词： Relative position UWB ImU trilateration IoT bayesian filter

Target blood pressure in diabetes patients with hypertension——What is the accumulated evidence in 2011?

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第8期12卷 611-623页

作者： peter m.NILSSON Department of Clinical Sciences Lund UniversityUniversity Hospital

There is overwhelming evidence that hypertension is an important risk factor for both macrovascular and microvascular complications in patients with diabetes,but the problem remains to identify appropriate goals for preventive therapies.A number of guidelines (the European Society of Cardiology (ESC)/European Association for the Study of Diabetes (EASD) 2007,the Joint National Committee (JNC)-Ⅶ 2003,the American Diabetes Association (ADA) 2011) have for example advocated a blood pressure goal of less than 130/80 mmHg,but this suggestion has been challenged by findings in recent trials and meta-analyses (2011).The European Society of Hypertension (ESH) therefore recommends a systolic blood pressure goal of "well below" 140 *** on evidence from both randomized controlled trials (hypertension optimal treatment (HOT),action in diabetes and vascular disease:preterax and diamicron mR controlled evaluation (ADVANCE),action to control cardiovascular risk in diabetes (ACCORD)) and observational studies (ongoing telmisartan alone and in combination with ramipril global endpoint trial (ONTARGET),international verapamil-trandolapril study (INVEST),treat to new targets (TNT),and the National Diabetes Register (NDR)),it has been shown that the benefit for stroke reduction remains even at lower achieved blood pressure levels,but the risk of coronary events may be uninfluenced or even increased at lower systolic blood pressure *** a recent meta-analysis,it was therefore concluded that the new recommended goal should be 130-135 mmHg systolic blood pressure for most patients with type 2 *** risk factors should also be controlled with a more ambitious strategy applied in the younger patients with shorter diabetes duration,but a more cautious approach in the elderly and frail patients with a number of vascular or non-vascular *** patients from East Asia,such as China,the stroke risk is relatively higher than the risk of coronary *** must al

关键词： Blood pressure Cardiovascular Diabetes Goal Hypertension Treatment

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Quantum corrections for Boltzmann equation

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Science China(Physics,mechanics & Astronomy) 2008年第9期51卷 1229-1239页

作者： m. Levy peter Department of Physics New York University

We present the lowest order quantum correction to the semiclassical Boltzmann distribution function,and the equation satisfied by this correction is given. Our equation for the quantum correction is obtained from the conventional quantum Boltzmann equation by explicitly expressing the Planck constant in the gradient approximation,and the quantum Wigner distribution function is expanded in pow-ers of Planck constant,too. The negative quantum correlation in the Wigner dis-tribution function which is just the quantum correction terms is naturally singled out,thus obviating the need for the Husimi’s coarse grain averaging that is usually done to remove the negative quantum part of the Wigner distribution function. We also discuss the classical limit of quantum thermodynamic entropy in the above framework.

关键词： quantum Boltzmann equation Wigner distribution function quantum correction

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Testing flexible polymer solar cells in near-space

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National Science Review 2023年第5期10卷 105-106页

作者： peter müller-Buschbaum Department of Physics TUM School of Natural Sciencesand Heinz Maier-Leibnitz-Zentrum(MLZ)Technical University of Munich

Since the big success of the Vanguard1 mission,being the first solar-powered satellite,the use of solar cells in space developed very ***,conventional solar cell technologies for space are based on silicon and GaAs **...

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Fluid and Osmotic Pressure Balance and Volume Stabilization in Cells Dedicated to Professor Karl Stark Pister for his 95th birthday

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Computer modeling in Engineering & Sciences 2021年第12期129卷 1329-1350页

作者： peter m.Pinsky Department of mechanical Engineering Stanford UniversityStanford94305CAUSA

A fundamental problem for cells with their fragile membranes is the control of their *** primordial solution to this problem is the active transport of ions across the cell membrane to modulate the intracellular osmotic *** this work,a theoretical model of the cellular pump-leak mechanism is proposed within the general framework of linear nonequilibrium *** model is expressed with phenomenological equations that describe passive and active ionic transport across cell membranes,supplemented by an equation for the membrane potential that accounts for the electrogenicity of the ionic *** active ionic transport,the model predicts that the intracellular fluid pressure will be balanced by the osmotic pressure and a new pressure component that arises from the active ionic fluxes.A model for the pump-leak mechanism in an idealized human cell is introduced to demonstrate the applicability of the proposed theory.

关键词： Pump-leak mechanism cell volume regulation active ion transport ion pump membrane transport cell mechanics modified Kedem-Katchalsky equations nonequilibrium thermodynamics phenomenological equations