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Impact of indoor heat load and natural ventilation on thermal comfort of radiant cooling system:An experimental study

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Energy and Built Environment 2023年第5期4卷 543-556页

作者： K Dharmasastha D.g.Leo Samuel S.M.Shiva Nagendr M.P.Maiya Department of Mechanical Engineering Indian Institute of Technology MadrasChennaiTamil Nadu 600036India Barghest Building Performance Pte.Ltd. 118535Singapore Department of Civil Engineering Indian Institute of Technology MadrasRefrigeration and Air ConditioningChennai 600036India Department of Building Enivironment and Energy Engineering The Hong Kong Polytechnic UniversityHong Kong

Construction and operation of buildings are responsible for about 20%of the global energy *** embodied energy of conventional buildings is high due to the utilization of energy-intensive construction mate-rials and traditional construction *** operational energy is attributed to the usage of power-consuming conventional air-conditioning ***,moving to an energy-efficient cooling technology and eco-friendly building material can lead to significant energy savings and CO 2 emission *** the present study,an energy-efficient thermally activated building system(TABS)is integrated with glass fiber rein-forced gypsum(gFRg),an eco-friendly building *** proposed hybrid system is termed the thermally activated glass fiber reinforced gypsum(TAgFRg)*** system is not only energy-efficient and eco-friendly but also provides better thermal *** experimental room with a TAgFRg roof is constructed on the premises of the Indian Institute of Technology Madras(IITM),Chennai,located in a tropical wet and dry climate *** influence of indoor sensible heat load and the impact of natural ventilation on the thermal comfort of the TAgFRg system are *** increase in internal heat load from 400 to 700 W deteriorates the thermal comfort of the indoor *** is evident from the increases in operative temperatures from 29.8 to 31.5℃ and the predicted percentage of dissatisfaction from 44.5%to 80.9%.Natural ventilation increases the diurnal fluctuation of indoor air temperature by 1.6 and 1.9℃ for with and without cooling cases,*** reduces the maximum indoor CO 2 concentration from 912 to 393 ppm.

关键词： Thermally activated building system Air-conditioning Natural ventilation Thermal comfort Indoor air quality

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A dual positional specific lipoxygenase functions in the generation of flavor compounds during climacteric ripening of apple

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Horticulture Research 2015年第1期2卷 280-292页

作者： Doreen Schiller Carolina Contreras Jörg Vogt Frank Dunemann Bruno g Defilippi Randolph Beaudry Wilfried Schwab Biotechnology of Natural Products Technische Universität MünchenLiesel-Beckmann-Str.1D-85354 FreisingGermany Department of Horticulture Michigan State University1066 Bogue StreetEast LansingMI 48824USA Julius Kühn-Institut(JKI)–Federal Research Centre for Cultivated Plants Institute for Breeding Research on Fruit CropsPillnitzer Platz 3aD-01326 DresdenGermany Julius Kühn-Institut(JKI)–Federal Research Centre for Cultivated Plants Institute for Breeding Research on Horticultural CropsErwin-Baur-Str.27D-06484 QuedlinburgGermany INIA La Platina PO Box 439-9SantiagoChile

Lipoxygenase(LOX)is an important contributor to the formation of aroma-active C6 aldehydes in apple(Malus×domestica)fruit upon tissue disruption but little is known about its role in autonomously produced aroma volatiles from intact *** explored the expression of 22 putative LOX genes in apple throughout ripening,but only six LOXs were expressed in a ripening-dependent *** LOX1:Md:1a,LOX1:Md:1c,LOX2:Md:2a and LOX2:Md:2b proteins showed 13/9-LOX,9-LOX,13/9-LOX and 13-LOX activity with linoleic acid,*** products of LOX1:Md:1c and LOX2:Md:2b were S-configured,LOX1:Md:1a and LOX2:Md:2a formed 13(R)-hydroperoxides as major ***-directed mutagenesis of gly567 to an alanine converted the dual positional specific LOX1:Md:1a to an enzyme with a high specificity for 9(S)-hydroperoxide *** high expression level of the corresponding MdLOX1a gene in stored apple fruit,the genetic association with a quantitative trait locus for fruit ester and the remarkable agreement in regio-and stereoselectivity of the LOX1:Md:1a reaction with the overall LOX activity found in mature apple fruits,suggest a major physiological function of LOX1:Md:1a during climacteric ripening of *** LOX1:Md:1c,LOX2:Md:2a and LOX2:Md:2b may contribute to aldehyde production in immature fruit upon cell disruption our results furnish additional evidence that LOX1:Md:1a probably regulates the availability of precursors for ester production in intact fruit tissue.

关键词： specific autonomous probably

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Autophagy inhibition by chloroquine sensitizes HT-29 colorectal cancer cells to concurrent chemoradiation

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World Journal of gastrointestinal Oncology 2014年第3期6卷 74-82页

作者： Caitlin A Schonewolf Monal Mehta Devora Schiff Hao Wu Bruce g Haffty Vassiliki Karantza Salma K Jabbour Departments of Radiation Oncology Robert Wood Johnson Medical SchoolUniversity of Medicine and Dentistry of New JerseyThe Cancer Institute of New JerseyNew BrunswickNJ 08903United States Departments of Medicine Robert Wood Johnson Medical SchoolUniversity of Medicine and Dentistry of New JerseyThe Cancer Institute of New JerseyNew BrunswickNJ 08903United States

AIM:To investigate whether the inhibition of autophagy by chloroquine(CQ)sensitizes rectal tumors to radiation therapy(RT)or concurrent chemoradiation(chemoRT).METHODS:In vitro,HCT-116 and HT-29 colorectal cancer(CRC)cell lines were treated as following:(1)PBS;(2)CQ;(3)5-fluorouracil(5-FU);(4)RT;(5)CQ and RT;(6)5-FU and RT;(7)CQ and 5-FU;and(8)5-FU and CQ and *** group was then exposed to various doses of radiation(0-8 gy)depending on the *** viability and proliferative capacity were measured by3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT)and clonogenic *** survivalcurves were constructed and compared across treatment *** status was determined by assessing the LC3-Ⅱto LC3-Ⅰratio on western blot analysis,autophagosome formation on electron microscopy and identification of a perinuclear punctate pattern with gFPlabeled LC3 on fluorescence *** cycle arrest and cell death were evaluated by FACS and AnnexinⅤ*** experiments were performed in triplicate and statistical analysis was performed by the student’s t test to compare means between treatment ***:RT(2-8 gy)induced autophagy in HCT-116and HT-29 CRC cell lines at 4 and 6 h post-radiation,respectively,as measured by increasing LC3-Ⅱto LC3-Ⅰratio on western ***,electron microscopy demonstrated autophagy induction in HT-29 cells24 h following irradiation at a dose of 8 *** treatment with 5-FU(25μmol/L)induced autophagy and the combination of 5-FU and RT demonstrated synergism in autophagy ***(10μmol/L)alone and in combination with RT effectively inhibited autophagy and sensitized both HCT-116 and HT-29 cells to treatment with radiation(8 gy;Pgnificant decrease in clonogenic survival was seen only in the HT-29 cell line,when CQ was combined with RT at doses of 2 and 8 gy(Pgression or Annexin V st

关键词： Autophagy Chloroquine Radiosensitization Colorectal cancer

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Intrarenal pseudoaneurysm after percutaneous nephrolithotomy:a case report

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Emergency and Critical Care Medicine 2022年第2期2卷 101-103页

作者： Mohamad Moussa Mohamad Abou Chakra Athanasios Dellis Athanasios g.Papatsoris Head of Surgery and Urology Department Lebanese UniversityZahraa HospitalUniversity Medical CenterBeirutLebanon Urology Department Lebanese UniversityBeirutLebanon Department of Urology/general Surgery Areteion HospitalAthensGreece 2nd Department of Urology School of MedicineSismanoglio HospitalNational and Kapodistrian University of AthensAthensGreece

Background:Percutaneous nephrolithotomy(PNL)is the gold standard to treat large or complex renal *** pseudoaneurysm is a rare,yet clinically significant,complication of *** summary:A 58-year-old man with a 3cm calculus in the lower calyx of the left kidney was operated on by PNL 3days before presentation to the emergency *** patient presented with massive hematuria and *** presentation,the patient appeared uncomfortable and in *** was in hemorrhagic *** patient was resuscitated with intravenous fluids and blood *** urgent computed tomography scan showed multiple clots in the left renal pelvis and bladder with a retroperitoneal *** patient underwent angiography which revealed an inferior pole branch *** pseudoaneurysm was treated by endovascular embolization with *** postoperative complications were ***:Selective renal artery embolization is an effective treatment for pseudoaneurysm post PNL with excellent outcomes.

关键词： Case report Embolization Intrarenal pseudoaneurysm Percutaneous nephrolithotomy

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Laboratory testing of a shuttle car canopy air curtain for respirable coal mine dust control

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International Journal of Coal Science & Technology 2018年第3期5卷 305-314页

作者： W. R. Reed Y. Zheng M. Yekich g. Ross A. Salem Pittsburgh Mining Research Division Centers for Disease Control and Prevention National Institute for Occupational Safety and Health 626 Cochrans Mill Rd. PittsburghPA 15236 USA J.H. Fletcher Inc. Huntington WV USA Marshall University Huntington WV USA

Canopy air curtain （CAC） technology has been developed by the National Institute for Occupational Safety and Health （NIOSH） for use on continuous miners and subsequently roof bolting machines in underground coal mines to protect operators of these machines from overexposure to respirable coal mine dust. The next logical progression is to develop a CAC for shuttle cars to protect operators from the same overexposures. NIOSH awarded a contract to Marshall University and J.H. Fletcher to develop the shuttle car CAC. NIOSH conducted laboratory testing to determine the dust control efficiency of the shuttle car CAC. Testing was conducted on two different cab configurations： a center drive similar to that on a Joy 10SC32AA cab model and an end drive similar to that on a Joy 10SC32AB cab model. Three different ventilation velocities were tested-0.61, 2.0, 4.3 rrds （120, 400, and 850 fpm）. The lowest, 0.61 m/s （120 fpm）, represented the ventilation velocity encountered during loading by the continuous miner, while the 4.3 m/s （850 fpm） velocity represented ventilation velocity airflow over the shuttle car while tramming against ventilation airflow. Test results showed an average of the dust control efficiencies ranging from 74 to 83% for 0.61 m/s （120 fpm）, 39%-43% for 2.0 m/s （400 fpm）, and 6%-16% for 4.3 m/s （850 fpm）. Incorporating an airflow spoiler to the shuttle car CAC design and placing the CAC so that it is located 22.86 cm （9 in.） forward of the operator improved the dust control efficiency to 51%-55% for 4.3 m/s （850 fpm） with minimal impact on dust control efficiencies for lower ventilation velocities. These laboratory tests demonstrate that the newly developed shuttle car CAC has the potential to successfully protect shuttle car operators from coal mine respirable dust overexposures.

关键词： Shuttle car Canopy air curtain Dust Airflow Coal mining

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Radiation Effect on Heat Transfer Analysis of MHD Flow of Upper Convected Maxwell Fluid between a Porous and a Moving Plate

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Frontiers in Heat and Mass Transfer 2024年第2期22卷 655-673页

作者： P.Pai Nityanand B.Devaki g.Bhat Pareekshith V.S.Sampath Kumar Department of Mathematics Manipal Institute of TechnologyManipal Academy of Higher EducationManipalKarnataka576104India

The study in this manuscript aims to analyse the impact of thermal radiation on the two-dimensional magnetohydrodynamic flow of upper convected Maxwell(UCM)fluid between parallel *** lower plate is porous and stationary,while the top plate is impermeable and *** equations that describe the flow are transformed into non-linear ordinary differential equations with boundary conditions by employing similarity *** Homotopy Perturbation Method(HPM)is then employed to approach the obtained non-linear ordinary differential equations and get an approximate analytical *** analysis includes plotting the velocity profile for different Reynolds number values and temperature distribution curves for distinct physical parameters such as Reynolds number,Deborah number,magnetic parameter,porosity parameter,radiation parameter,and Prandtl *** the case of injection,the temporal profile declines with an increase in radiation parameter as the plates move away from each other,and an opposite trend is observed as plates move towards each ***,the skin friction coefficient and heat transfer rate are analysed for the impact of these parameters using *** numerical values obtained using HPM are compared using the classical finite difference *** results show good agreement between the semi-analytical and numerical solutions.

关键词： Upper convectedmaxwell fluid MHDsqueezing flow similarity transformations homotopy perturbationmethod finite difference method

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LINKINg CONSTRUCTIVE AND ENERgY INNOVATIONS FOR A NET ZERO-ENERgY BUILDINg

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Journal of green Building 2020年第1期15卷 153-184页

作者： E.Pujadas-gispert C.C.Korevaar M.Alsailani S.P.g.Moonen Postdoc Department of the Built EnvironmentInnovative Structural DesignEindhoven University of Technology Master Student Innovative Structural DesignEindhoven University of Technology. Master Student Building Physics and ServicesEindhoven University of Technology. Associate Professor Department of the Built EnvironmentInnovative Structural DesignEindhoven University of Technology

This article explains the design,construction and energy strategies of LINQ,a net-zero energy building that was successfully entered into the Solar Decathlon Middle East 2018 held in *** of engineering,building physics,architecture and urban planning designed,built and operated *** is mainly powered by solar energy and made of *** of LINQ’s innovations are the ventilated façade with customizable bio-based tiles,the indirect evaporative water cooling system,and the light building integrated photovoltaic-thermal *** sent more energy to the grid than it drew throughout the ***,energy production could have been improved according to simulations and technical *** is a good example of current and future building expectations-combining multiple criteria,strategies,and solutions-to contribute to environmental,social and economic sustainability.

关键词： indirect evaporative cooling system bio-based materials building integrated photovoltaic-thermal system solar-powered building thermal mass energy-efficient building Solar Decathlon

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growth of single crystals in the (Na_(1/2)Bi_(1/2))TiO_(3)-(Sr_(1-x)Ca_(x))TiO_(3) system by solid state crystal growth

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Journal of Advanced Ceramics 2021年第5期10卷 973-990页

作者： Phan gia LE Huyen Tran TRAN Jong-Sook LEE John g.FISHER Hwang-Pill KIM Wook JO Won-Jin MOONC School of Materials Science and Engineering Chonnam National University77 Yongbong-roBuk-guGwangju 61186Republic of Korea School of Materials Science and Engineering Ulsan National Institute of Science and Technology50 UNIST-gilEonyang-eupUlju-gunUlsan 44919Republic of Korea Korea Basic Science Institute Gwangju Center77 Yongbong-roBuk-guGwangju 61186Republic of Korea

Ceramics based on(Na_(1/2)B_(1/2))TiO_(3) are promising candidates for actuator applications because of large strains generated by an electric field-induced phase *** example,the(1-x)(Na_(1/2)Bi_(1/2))TiO_(3)-xSrTiO_(3) system exhibits a morphotropic phase boundary at x=0.2-0.3,leading to high values of inverse piezoelectric constant d_(33),which can be further improved by the use of single *** our previous work,single crystals of (Na_(1/2)B_(1/2))TiO_(3)-SrTiO_(3) and (Na_(1/2)Bi_(1/2))TiO_(3)-TiO_(3) were grown by the solid state crystal growth *** in the(Nai/2Bi/2)TiO3-SrTiO3 system was sluggish whereas the (Na_(1/2)B_(1/2))TiO_(3)-CaTiO_(3) single crystals grew *** the present work,0.8(Na_(1/2)Bi_(1/2))Ti0_(3)-0.2(Sr_(1-x)Ca_(x))Ti0_(3) single crystals(with x=0.0,0.1,0.2,0.3,0.4)were produced by the solid state crystal growth technique in an attempt to improve crystal growth *** dependence of mean matrix grain size,single crystal growth distance,and electrical properties on the Ca concentration was investigated in *** investigations indicated that at x=0.3 the matrix grain growth was suppressed and the driving force for single crystal growth was *** Sr with Ca increased the shoulder temperature T_(s) and temperature of maximum relative permittivity T_(max),causing a decrease in inverse piezoelectric properties and a change from normal to incipient ferroelectric behavior.

关键词： (Na_(1/2)Bi_(1/2))TiO_(3) lead-free piezoelectric single crystal microstructure electrical properties

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grain boundary engineering with nano-scale InSb producing high performance In_(x)Ce_(y)Co_(4)Sb_(12+z)skutterudite thermoelectrics

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Journal of Materiomics 2017年第4期3卷 273-279页

作者： Han Li Xianli Su Xinfeng Tang Qingjie Zhang Ctirad Uher g.Jeffrey Snyder Umut Aydemir State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Physics University of MichiganAnn ArborMI 48109USA Department of Materials Science and Engineering Northwestern UniversityEvanstonIL 60208USA Department of Chemistry Koc UniversitySariyerIstanbul 34450Turkey

Thermoelectric semiconductors based on CoSb_(3)hold the best promise for recovering industrial or automotive waste heat because of their high efficiency and relatively abundant,lead-free constituent ***,higher efficiency is needed before thermoelectrics reach economic viability for widespread *** this study,n-type In_(x)Ce_(y)Co_(4)Sb_(12+z)skutterudites with high thermoelectric performance are produced by combining several phonon scattering mechanisms in a panoscopic *** melt spinning followed by spark plasma sintering(MS-SPS),bulk In_(x)Ce_(y)Co_(4)Sb_(12+z)alloys are formed with grain boundaries decorated with nano-phase of *** skutterudite matrix has grains on a scale of 100-200 nm and the InSb nano-phase with a typical size of 5e15 nm is evenly dispersed at the grain boundaries of the skutterudite *** with the presence of defects on the Sb sublattice,this multi-scale nanometer structure is exceptionally effective in scattering phonons and,therefore,InxCey-Co_(4)Sb_(12)/InSb nano-composites have very low lattice thermal conductivity and high zT values reaching in excess of 1.5 at 800 K.

关键词： Filled skutterudites Nanocomposite MS-SPS Thermoelectric properties

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Scanning-slit topography in patients with keratoconus

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International Journal of Ophthalmology(English edition) 2017年第11期10卷 1686-1692页

作者： László Módis Jr. gábor Németh Eszter Szalai Zsuzsa Flaskó Berthold Seitz Department of Ophthalmology University of Debrecen Medical and Health Science Center Debrecen 4032 Hungary Borsod-Abau-Zemplen County Hospital and University Teaching Hospital Miskolc 3526 Hungary Department of Ophthalmology Homburg Kemtoconus Center University of Saarland Homburg/Saar 66424 Germany

AIM： To evaluate the anterior and posterior corneal surfaces using scanning-slit topography and to determine the diagnostic ability of the measured corneal parameters in ***： Orbscan II measurements were taken in 39 keratoconic corneas previously diagnosed by corneal topography and in 39 healthy eyes. The central minimum, maximum, and astigmatic simulated keratometry（K） and anterior axial power values were determined. Spherical and cylindrical mean power diopters were obtained at the central and at the steepest point of the cornea both on anterior and on posterior mean power maps. Pachymetry evaluations were taken at the center and paracentrally in the 3 mm zone from the center at a location of every 45 degrees. Receiver operating characteristic（ROC） analysis was used to determine the best cut-off values and to evaluate the utility of the measured parameters in identifying patients with ***： The minimum, maximum and astigmatic simulated K readings were 44.80±3.06 D, 47.17±3.67 D and 2.42±1.84 D respectively in keratoconus patients and these values differed significantly（P〈0.0001 for all comparisons） from healthy subjects. For all pachymetry measurements and for anterior and posterior mean power values significant differences were found between the two groups. Moreover, anterior central cylindrical power had the best discrimination ability（area under the ROC curve=0.948）.CONCLUSION： The results suggest that scanning-slit topography and pachymetry are accurate methods both for keratoconus screening and for confirmation of the diagnosis.

关键词： keratoconus Orbscan topography pachymetry

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