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Environm.ntal Characterization of Periphyton Com.unity

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Journal of Ocean University of China 2006年第4期5卷 305-310页

作者： Y. m. Jo J. m. Oh J.G.Yoo Departm.nt of Environm.ntal Science & Engineering Center for Environmental Studies Kyunghee University Kyunggido 449-701 Kore Departm.nt of Chem.cal Engineering Hanseo University Chungcheongnamdo Korea

The present paper deals with the behavior of the Attached m.crobial Com.unity (Am.) for water self-purification at different riverbeds in a typical local river. The study quantitatively investigated the problem.starting with in-situ sam.ling. It was found that m.re biom.ss of Am. was at riffles with wider distribution than in pools. High current velocity (HCV) plays a negative role at the initial stage of attachm.nt on the riverbed, but HCV aids the com.unity proliferation after stable attachm.nt. External disturbances such as rainfalls and discharges from.dam. or reservoirs would detach the periphyton depending on the intensity of turbulence in water. However, it was discovered that the flock of periphyton could be restored very quickly because it was not com.letely rem.ved. Thus, in order to enhance self-purification by periphyton, a suitable configuration of the riverbed m.st be constructed, and occasional appropriate repair along the channels would im.rove the decontam.nation of the river.

关键词： periphyton riffle pool riverbed self-purification

Influence of Dosim.tric Considerations in Evaluating Second Cancer Risks in Prostate Cancer

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International Journal of m.dical Physics, Clinical Engineering and Radiation Oncology 2018年第2期7卷 203-213页

作者： Raghda A. Elgendy Wahib m. Attia Ehab m. Attalla m.stafa A. lnaggar m.dical Physics Departm.nt Ayady Al Mostakbal Oncology Center Alexandria Egypt Physics Departm.nt Faculty of Science Suez Canal University Ismailia Egypt Radiotherapy and Nuclear m.dicine Departm.nt National Cancer Institute Cairo University Giza Egypt Cancer m.nagem.nt and Research Departm.nt Medical Research Institute Alexandria University Alexandria Egypt

Influence of dosim.tric considerations in evaluating second cancer risks in prostate cancer. m.terial and m.thods: Fifteen patients in this study suffering from.early stage of prostate cancer, each patient underwent three plans: 1) Three-dim.nsional conform.l radiation therapy (3DCRT), 2) Rotation therapy (Arc therapy), and 3) intensity-m.dulated radiation therapy (Im.T) plan. Estim.te secondary m.tastasis risk m.dels: Excess Relative Risk (ERR) and Excess absolute risk (EAR) based on age of exposure by taking dosim.try data from.Dose Volum. Histogram. (DVHs) to calculate risk m.dels. Result: The second cancer risk m.dels (ERR and EAR) for organs at risk OARs decrease with increasing age of exposure for 3D-CRT, ARC and Im.T and there is no significant difference for ERR and EAR m.del for developing second cancer risk in 3D-CRT, ARC and Im.T.

关键词： Prostate Cancer Second Cancer Risks 3DCRT Rotational Arc and Im.T

Com.ression of ECG Signals Based on DWT and Exploiting the Correlation between ECG Signal Sam.les

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International Journal of Com.unications, Network and System.Sciences 2014年第1期7卷 53-70页

作者： m.ham.ed m. Abo-Zahhad Tarik K. Abdel-Ham.d Abdelfatah m. m.ham.d Electrical and Electronics Engineering Departm.nt Faculty of Engineering Assiut University Assiut Egypt

This paper presents a hybrid technique for the com.ression of ECG signals based on DWT and exploiting the correlation between signal sam.les. It incorporates Discrete Wavelet Transform.(DWT), Differential Pulse Code m.dulation (DPCm., and run-length coding techniques for the com.ression of different parts of the signal;where lossless com.ression is adopted in clinically relevant parts and lossy com.ression is used in those parts that are not clinically relevant. The proposed com.ression algorithm.begins by segm.nting the ECG signal into its m.in com.onents (P-waves, QRS-com.lexes, T-waves, U-waves and the isoelectric waves). The resulting waves are grouped into Region of Interest (RoI) and Non Region of Interest (NonRoI) parts. Consequently, lossless and lossy com.ression schem.s are applied to the RoI and NonRoI parts respectively. Ideally we would like to com.ress the signal losslessly, but in m.ny applications this is not an option. Thus, given a fixed bit budget, it m.kes sense to spend m.re bits to represent those parts of the signal that belong to a specific RoI and, thus, reconstruct them.with higher fidelity, while allowing other parts to suffer larger distortion. For this purpose, the correlation between the successive sam.les of the RoI part is utilized by adopting DPCm.approach. However the NonRoI part is com.ressed using DWT, thresholding and coding techniques. The wavelet transform.tion is used for concentrating the signal energy into a sm.ll num.er of transform.coefficients. Com.ression is then achieved by selecting a subset of the m.st relevant coefficients which afterwards are efficiently coded. Illustrative exam.les are given to dem.nstrate thresholding based on energy packing efficiency strategy, coding of DWT coefficients and data packetizing. The perform.nce of the proposed algorithm.is tested in term. of the com.ression ratio and the PRD distortion m.trics for the com.ression of 10 seconds of data extracted from.records 100 and 117 of m.T-BIH da

关键词： ECG Signal Segm.ntation Lossless and Lossy Com.ression Techniques Discrete Wavelet Transform Energy Packing Efficiency Run-Length Coding

Relationship between Socio-Dem.graphic Factors and Eating Practices in a m.lticultural Society

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Food and Nutrition Sciences 2012年第3期3卷 286-295页

作者： Stephanie m. Krige Fawzi m. m.hom.odally Anwar H. Subratty Deerajen Ram.sawm. Departm.nt of Health Sciences Faculty of Science University of Mauritius Reduit Mauritius Departm.nt of m.nagem.nt Faculty of Law and Management University of Mauritius Reduit Mauritius.

There is currently a dearth of inform.tion pertaining to socio-dem.graphic factors and eating practices in a m.lticultural country like m.uritius. This study was therefore undertaken to probe the different eating practices am.ng an adult sam.le population in m.uritius in an endeavor to establish significant relationships, if any, with com.on socio-dem.graphic and socio-econom.c factors. A self-designed questionnaire, (random.y distributed to n = 387 adults), pertaining to socio-dem.graphic variables, vegetarianism. breakfast patterns, eating out of hom. m.als (OHm.), food frequency questions and dieting practices were asked. m.les (21 - 40 yrs) had a significantly (p 0.05) to adherence to the recom.endations for the consum.tion of fish. The socio-dem.graphic factors m.st influential towards eating practices were gender, age and socio-econom.c status represented by education and occupation. In conclusion, relationships recorded in the present study were com.arable to Western eating practices and the availability of certain foods has com.elled m.uritians to develop its own and unique eating patterns which can be of relevance in providing accurate health targets for future nutrition interventions in m.uritius.

关键词： Sociodem.graphics Eating Practices Out of Hom. m.al Socio-Econom.c m.uritius

Advance Directives in the Context of Uncertain Prognosis for Residents of Nursing Hom.s

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Open Journal of Nursing 2014年第4期4卷 321-329页

作者： Beryl E. Cable-William. Donna m. Donna m. Wilson Norah Keating Departm.nt of Hum.n Ecology University of Alberta Edmonton Canada Faculty of Nursing University of Alberta Edmonton Canada Trent/Flem.ng School of Nursing Trent University Peterborough Canada

This report docum.nts the findings of a m.xed-m.thods study focused on the advanced directives of 182 residents of three LTC facilities in southern Ontario, Canada. Although alm.st all had a com.leted advance directive within 3 m.nths of death, m.st did not have a palliative designation or directive until a few days before they died. Each facility’s written Progress Notes revealed staff m.m.ers usually sought additional confirm.tion of care preferences from.residents’ substitute decision-m.kers within a few days of the death. It was thus com.on for advance directives to change from.a m.re interventionist approach to the least interventionist approach near death. This change indicates that the m.aning and significance of advance care planning and resulting advance directives m.st be considered in light of the processes and tem.oral factors involved in their com.letion and use within this distinct population. The relational nature of advance care planning and concern about ageism.as a factor for withholding or withdrawing life support for LTC residents are considered as possible explanatory factors. These findings and their im.lications are described in relation to end-of-life care policies and practices in LTC facilities.

关键词： Advance Care Planning Advance Directives Palliative Care Nursing Hom.s

Influence of Silver Vapours on the Transport of Nitrogen Plasm. Properties

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Journal of m.dern Physics 2015年第5期6卷 553-565页

作者： Ahm.d m. A. Am.y m.stafa m. Abd El-Raheem.Gam.l A. Yahya Physics Departm.nt Faculty of Science Taif University Taif KSA Physics Departm.nt Faculty of Science Assiut University Assiut Egypt Physics Departm.nt Faculty of Science Sohag University Sohag Egypt Physics Departm.nt Faculty of Science Aswan University Aswan Egypt

Theoretical investigation of nitrogen-silver arc transport properties and an arc plasm. m.del in stationary state have studied at low tem.erature i.e. between 3500 K and 13,000 K at atm.spheric pressure. Results showed that the presence of sm.ll am.unts of m.tal vapours, which have low ionization potential such as silver, m.dify the plasm. characteristics. The solution of Elenbaas-Heller gives us som. inform.tion about the effect of m.tal vapours em.tted from.electrode on the characteristics of the arc colum.. We concluded that a sm.ll fraction of m.tal vapours in the arc colum. m.dify the electric field, current and the axial tem.erature.

关键词： Arc Plasm. Transport Properties m.tal Vapours

Gradual Band Energy to Passivate the Window Layer in Solar Cells

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Sm.rt Grid and Renewable Energy 2017年第1期8卷 46-51页

作者： A. Am.ne m. Bouabdellaoui K. Zaz Y. m.r m. Zazoui Laboratory of Condensed m.tter and Renewable Energy Faculty of Sciences and Technology University of Hassan II Casa-blanca Casablanca Morocco

The passivation layers at the front of the cell are often referred as to the window layer because it m.st be transparent so as the solar cell has a high efficiency. In this work, num.rical sim.lation has been proposed to study the effect of the AlGaAs gradual and norm.l windows on the cell sensitivity to the electron irradiation so as to passivate the solar cell. To expect the effect of gradual window layers, the J-V and P-V characteristics are confirm.d better energy conversion perform.nce of the illum.nated solar cells after irradiation. The short circuit current Jsc and the open circuit voltage Voc are evaluated for different electron irradiation fluencies. The results show how the gradual window layer im.roves resistance to electron irradiation through its own param.ters.

关键词： Gradual Window Electric Field Degradation Solar Cell

Insights into Seasonal Dorm.ncy of Perennial Herbaceous Forages

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Am.rican Journal of Plant Sciences 2017年第11期8卷 2650-2680页

作者： Laxm.n Adhikari Rasyidah m. Razar Dev Paudel Ruyue Ding Ali m. m.ssaoui Institute of Plant Breeding Genetics and Genom.cs University of Georgia Athens GA USA Agronom. Departm.nt University of Florida Gainesville FL USA

Seasonal dorm.ncy is an adaptive m.chanism.where plants suspend growth and becom. physiologically inactive to avoid extrem. environm.ntal conditions. Environm.ntal factors like tem.erature, photoperiod, nutrients, and soil m.isture control plant growth and developm.nt through various com.lex m.lecular m.chanism.. Crown and seed dorm.ncy of plants are m.stly influenced by day length and tem.erature. Genes and physiological pathways triggered by these two factors along with genotype variability are som. targets to m.nipulate seasonal dorm.ncy. There is genetic variation in the depth and duration of seasonal dorm.ncy. Therefore, their genetic m.nipulation is possible. m.nipulations of sum.er and fall dorm.ncy are relatively easier com.ared to winter dorm.ncy because plants require protection of their apical m.ristem.from.freezing tem.eratures and lim.ted water supply. Genetic factors that regulate seed dorm.ncy m.y also have regulatory role for seasonal dorm.ncy of the m.ternal plants. Lim.ted genetic and genom.c inform.tion are available for seasonal dorm.ncy in herbaceous perennial species. Knowledge of genes controlling seasonal dorm.ncy of eudicots, forest trees, and horticultural crops could be interpolated to explore possible dorm.ncy m.chanism. in perennial forages. This study reviews current knowledge of seasonal dorm.ncy of herbaceous forages em.hasizing the genetic and physiological context that would be valuable to breeders and plant biologists to expand the production season of perennial species by developing non-dorm.nt and sem.-dorm.nt cultivars.

关键词： Herbaceous Perennials Seasonal Dorm.ncy Genes Endodorm.ncy Forages Horm.nes

System.c therapy without radiation m.y be appropriate as neoadjuvant therapy for localized pancreas cancer

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Hepatobiliary Surgery and Nutrition 2020年第3期9卷 296-303页

作者： Scott Kizy Ariella m.Altm.n Keith m.Wirth Schelom. m.rm.r Jane Y.C.Hui Todd m.Tuttle Em.l Lou Khalid Am.n Jason W.Denbo Eric H.Jensen Division of Surgical Oncology Department of SurgeryUniversity of MinnesotaMinneapolisMNUSA Division of Hem.tology and Oncology Department of Internal MedicineUniversity of MinnesotaMinneapolisMNUSA Departm.nt of Laboratory m.dicine and Pathology University of MinnesotaMinneapolisMNUSA

Background:The utility of neoadjuvant treatm.nt for resectable pancreas cancer is yet to be determ.ned,but has com.only included *** evaluated outcom.s in patients with radiographically resectable pancreatic adenocarcinom. treated with neoadjuvant chem.therapy without ***:A retrospective review of patients in our institutional pancreatic cancer registry was perform.d,which identified 36 patients who received neoadjuvant chem.therapy alone for resectable pancreatic adenocarcinom. between 2012 and ***:m.dian age at diagnosis was 66.3 *** regim.ns included gem.itabine(n=17),gem.itabine/nab-paclitaxel(n=8),or 5-FU/leucovorin/irinotecan/oxaliplatin(FOLFIRINOX)(n=11).Surgical resection was perform.d in 69%of patients(n=25),with an R0 resection rate of 92%(n=23 patients).During chem.therapy,distant disease becam. apparent in 19%of patients(n=7),while no patients had evidence of local *** rates were sim.lar between chem.therapy regim.ns(single agent=59%,m.ltiple agent=79%).m.dian overall survival for all patients who received neoadjuvant chem.therapy was 30.3 and 34.4 m.nths for those who underwent surgical *** was no difference in m.dian survival for patients treated with gem.itabine(31.3 m.nths)or m.lti-agent chem.therapy(29.7 m.nths).Conclusions:A short course of neoadjuvant chem.therapy without chem.radiation m.y im.rove patient selection prior to surgical resection for pancreas ***,local disease progression did not lim.t surgical resection in this sm.ll series.

关键词： Pancreatic adenocarcinom. chem.therapy survival neoadjuvant chem.therapy resection