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Organic Solar Cells at Stratospheric Condition for High Altitude Platform Station Application

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Chinese Journal of Chemistry 2022年第24期40卷 2927-2932页

作者： Ram Datt Harrison Ka Hin Lee Guichuan Zhang Hin-Lap yip Wing chung Tsoi SPECIFIC Faculty of Science and EngineeringSwansea UniversityBay CampusFabian WaySwanseaSA18EN United Kingdom Department of Physics City University of Hong KongKowloonHong KongSARChina School of Semiconductor Science and Technology South China Normal UniversityFoshanGuangdong528225 China State Key Laboratory of Luminescent Materials and Devices South China University of Technology381 Wushan RoadGuangzhouGuangdong510640 China Department of Materials Science and Engineering City University of Hong KongKowloonHong KongChina School of Energy and Environment City University of Hong KongKowloonHong KongChina Hong Kong Institute for Clean Energy City University of Hong KongKowloonHong KongChina

High specific power or power to mass ratio is a critical concern of photovoltaic(PV)for aerospace *** solar cells(OSCs)have advantages such as high absorption coefficient,compatibility with flexible substrate,light-weight,***,recently OSCs achieved power conversion efficiency(PCE)over 20%with the incorporation of the non-fullerene based small molecule acceptor and high specific power is believed to be *** enter the market,high-altitude platform station(HAPS)is perhaps the first place to start *** this work,we explore and compare the in-situ performance of two high performing OSCs,using the same donor but different acceptors,in mimic HAPS environment where the pressure,temperature and the illumination conditions are *** found that the use of acceptor can result in substantial difference in the performance at low temperatures.

关键词： Organic solar cells Stratosphere High-altitude platform station Low-temperature physics Donor-acceptor systems

Dietary analysis of the House Swift(Apus nipalensis)in Hong Kong using prey DnA in faecal samples

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Avian Research 2021年第1期12卷 86-101页

作者： Chun Ting chung Hok Sze Wong Man Long Kwok Qi Meng King Ming Chan School of Life Sciences The Chinese University of Hong KongSha Tin 999077N.TChina Swift and Swallow Research Group The Hong Kong Bird Watching Society7CV Ga Building532 Castle Peak RoadLai Chi KokKowloonHong Kong 999077China

Background:To understand the dietary composition of the highly aerial swift(Apodidae),ecologists conventionally depend on the morphological identification of prey items from food boluses or stomach contents,but these techniques are often invasive,require expertise in identification,and often cannot produce accurate identifications at the species ***:DnA barcoding was used to analyse the dietary composition of House Swifts(Apus nipalensis)in Hong Kong,*** samples from five different colonial nest sites were collected between 2019 and *** used universal primers to amplify a region of the cytochrome C oxidase gene from prey DnA in the faecal samples for identification ***:Ten different orders and 44 families from three different classes of Arthropoda were identified in the collected faecal ***,Hemiptera and Diptera were the most prevalent groups of prey found in the *** in the dietary composition of House Swifts during the breeding(April to September)and nonbreeding(October to March)season were also ***,particularly ants(Formicidae),were predominant in the diet during the breeding season,whereas Diptera and Hemiptera were predominant during the non-breeding ***:The prey groups identified in this study were similar to those identified in a previous study of the diet of House Swift,which also suggests a possible role of House Swifts in reducing the numbers of local insect *** study demonstrates the usefulness of applying molecular tools for the dietary analysis of aerial *** local forested areas may be crucial for the maintenance of House Swift population.

关键词： Diet DnA barcoding House swift Urbanisation threat

Role of C11-FDG dual-tracer PET-CT scan in metastatic screening of hepatocellular carcinoma-a cost-effectiveness analysis

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Hepatobiliary Surgery and nutrition 2021年第3期10卷 301-307页

作者： Kevin K.W.Chu Albert C.y.Chan Ka Wing Ma Wong Hoi She Wing Chiu Dai Kenneth S.H.Chok Tan To Cheung chung Mau Lo Department of Surgery The University of Hong KongHong KongChina

Background:We aimed to identify predictive factors for positron emission tomography(PET)-detected hepatocellular carcinoma(HCC)metastasis and a cost-effective approach to preoperative PET-computed tomography(CT)for detecting ***:Clinicopathological and survival data of HCC patients having PET-CT with 18F-fludeoxyglucose(FDG)and 11C-acetate(ACT)following contrast-enhanced CT/magnetic resonance imaging(MRI)for preoperative tumor staging were *** logistic regression was performed to identify predictive factors for PET-detected metastasis.A cost-benefit analysis model was built for the incurred costs and the impact of PET-CT findings on treatment strategy was ***:Totally 152 patients were ***-tracer PET-CT detected metastasis in 17 patients(11%).By multivariate analysis,alpha-fetoprotein(AFP)≥400 ng/mL[relative risk(RR):4.30,95%confidence interval(CI):1.41-13.15,P=0.011]and bilobar disease(RR:3.94,95%CI:1.24-12.52,P=0.014)were independent predictive factors for PET-detected ***-CT findings altered the treatment strategy for 12 patients(7.9%);three partial hepatectomies,eight episodes of transarterial chemoembolization(TACE)and one episode of ablation were avoided,with an estimated cost-saving of US$91,000,$150,000 and$10,600 *** the PET-CT been performed only for patients with AFP≥400 ng/mL or bilobar disease(n=74),metastasis would have been confirmed in 14 patients(18.9%),and the cost-saving per patient was estimated at US$1,***:Dual-tracer PET-CT is cost-effective and useful for preoperative HCC staging in patients with AFP≥400 ng/mL or bilobar *** routine use in preoperative workup for all HCC patients is not *** disease with AFPng/mL can achieve good negative predictive value for PET-detected *** patients with either factor can avoid unnecessary procedures and is thus cost-effective for preoperative HCC workup.

关键词： Cost-effectiveness study dual-tracer positron emission tomography-computed tomography(dual-tracer PET-CT) hepatocellular carcinoma(HCC) metastatic screening preoperative investigation

Chemical and Sr-nd compositions and ^(40)Ar/^(39)Ar ages of nW-trending dolerite dikes of Burkina Faso: Evidence for a Mesoproterozoic magmatism in the West African Craton

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Geoscience Frontiers 2018年第6期9卷 1957-1980页

作者： Boukare Tapsoba Ching-Hua Lo Urbain Wenmenga yoshiyuki Iizuka Sun-Lin chung Gregory Shellnutt Department of Geosciences National Taiwan University UFR-SVT Département de Géologie Université Pr.Joseph Ki-Zerbo de Ouagadougou Institute of Earth Sciences Academia Sinica Department of Earth Sciences National Taiwan Normal University

The Paleoproterozoic basement of the northeastern part of the Leo-Man craton is intruded by generally nW-trending dikes. These regional scale dikes extend over 1000 km in Burkina Faso, Mali and niger. We present chemical and Sr-nd isotope compositions, as well as 40 Ar/39 Ar ages of these dikes with the following strikes n98°-n112°, and n114°-n124° in nE Burkina Faso. Field relationships show that the dikes are posterior to all other rock types dated between 2.26 Ga and 2.0 Ga. Chemical data indicate that the dikes are continental flood basalts and composed of low-Ti(TiO2 ≤ 2 wt.%) sub-alkaline basalts and andesites. They exhibit a minor negative Europium anomaly(0.86-0.99) and slightly fractionated REE patterns((La/yb)_n= 2.5-9.1; yb_n = 9.5-19.9). The ratios of Th/Ta(1.3-11.4) and Ce/Pb(5.2-58.5)suggest a varying crustal assimilation of the dike magmas during ascent in the continental crust for all studied samples. Calculated P-T conditions indicate that the magma reached temperatures of 1285 ℃(calculated from olivine compositions) and pressures of 6.9 kbar(calculated for pyroxene minerals).Calculated initial 87 Sr/86 Sr(0.70040-0.70260) and ε_(nd)(t)=+2.1 to-3.5 at 1575 Ma,also point to a crustal contamination with the most primitive samples showing T_(DM) values of 1946 Ma and 2154 Ma. The low values of La/Ba(nd nb/La(ntrast with the low Th/nb(nd suggest a lithospheric mantle or subduction-modified mantle as possible source for the dikes. Sr-nd data, Mg# and nbTa-Zr-y-Th-Tb-yb compositions further suggest that the most primitive samples were emplaced in a none orogenic setting and their magmas were subjected to variable crustal contaminations. Literature and the present whole rock 40 Ar/39 Ar age determinations show that the dikes were emplaced during a widespread Mesoproterozoic magmatism between 1.6 Ga and 1.2 Ga, and were affected by a thermal event causing the argon systematics resetting, best constrained by the date of sample KK1(123

关键词： Mafic dike swarm Depleted mantle Mesoproterozoic Continental tholeiites nuna West African Craton

Derivation of Regression Coefficients for Sea Surface Temperature Retrieval over East Asia

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Advances in Atmospheric Sciences 2006年第3期23卷 474-486页

作者： Myoung-Hwan AHn Eun-Ha SOHn Byong-Jun HWAnG Chu-yong chung Xiangqian WU Remote Sensing Research Laboratory/Meteorological Research Institute Seoul Korea Office of Research and Applications National Environmental Satellite Data and Information Service National Oceanic and Atmospheric Administration

Among the regression-based algorithms for deriving SST from satellite measurements, regionally optimized algorithms normally perform better than the corresponding global algorithm. In this paper, three algorithms are considered for SST retrieval over the East Asia region （15°-55°n, 105°-170°E）, including the multi-channel algorithm （MCSST）, the quadratic algorithm （QSST）, and the Pathfinder algorithm （PFSST）. All algorithms are derived and validated using collocated buoy and Geostationary Meteorological Satellite （GMS-5） observations from 1997 to 2001. An important part of the derivation and validation of the algorithms is the quality control procedure for the buoy SST data and an improved cloud screening method for the satellite brightness temperature measurements. The regionally optimized MCSST algorithm shows an overall improvement over the global algorithm, removing the bias of about -0.13℃ and reducing the root-mean-square difference （rmsd） from 1.36℃ to 1.26℃. The QSST is only slightly better than the MCSST. For both algorithms, a seasonal dependence of the remaining error statistics is still evident. The Pathfinder approach for deriving a season-specific set of coefficients, one for August to October and one for the rest of the year, provides the smallest rmsd overall that is also stable over time.

关键词： Regional SST algorithm GMS-5 Data quality control cloud detection

Radial nerve recovery following closed nailing of humeral shaft fractures without radial nerve exploration: A retrospective study

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World Journal of Clinical Cases 2021年第27期9卷 8044-8050页

作者： Kuei-Lin yeh Chen-Kun Liaw Tai-yin Wu chung-Pei Chen Department of Orthopedics Shin Kong Wu-Ho Su Memorial HospitalTaipei City 111Taiwan Department of Orthopedics School of MedicineCollege of MedicineTaipei Medical UniversityTaipei City 11031Taiwan Department of Orthopedics Shuang Ho HospitalTaipei Medical UniversityNew Taipei City 23561Taiwan Graduate Institute of Biomedical Optomechatronics College of Biomedical EngineeringResearch Center of Biomedical DeviceTaipei Medical UniversityTaipei City 11301Taiwan Department of Family Medicine Zhongxing BranchTaipei City HospitalTaipei City 10341Taiwan Institute of Epidemiology and Preventive Medicine National Taiwan UniversityTaipei City 10055Taiwan national Taipei University of nursing and Health Science Taipei City 11219Taiwan Department of Orthopedics Cathay General HospitalNew Taipei City 221Taiwan

BACKGROUnD Radial nerve palsy due to humeral shaft fracture is the most common peripheral nerve injury associated with long bone *** antegrade nailing surgical technique is becoming popular for the fixation of these fractures with minimal *** analyzed nerve recovery in patients with humeral shaft fracture and radial nerve palsy treated with humeral nail fixation without nerve *** To assess the radial nerve recovery rate and time from humeral shaft fracture with surgical treatment using close *** We retrospectively collected data of patients who underwent undergone surgical nail fixation for humeral shaft fractures between October 1,2016,and March 31,***,we analyzed the primary or secondary radial nerve palsy recovery rate and radial nerve motor function recovery *** The study included 70 patients who underwent surgical treatment for closed-or Gustilo type I open humeral shaft fractures using a nail fixation technique without radial nerve *** patients suffered from primary(n=5)and secondary(n=5)radial nerve palsy.A 100%radial nerve recovery rate was *** mean recovery time was 4.3 *** The study results indicate full recovery of radial nerve palsies from humeral shaft fracture using close nailing *** need not be concerned about the occurrence of permanent nerve palsies.

关键词： Humeral shaft fracture Radial nerve palsy Close nailing fixation nerve exploration

Tuning the particle size,physical properties,and photocatalytic activity of Ag_(3)PO_(4)materials by changing the Ag^(+)/PO_(4)^(3-)ratio

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Chinese Physics B 2023年第3期32卷 561-568页

作者： Hung n M Oanh L T M chung D P Thang D V Mai V T Hang L T Minh n V Center for nano Science and Technology Hanoi National University of Education136 Xuan Thuy RoadCau Giay DistrictHanoi 100000Vietnam Department of Physics Hanoi National University of Education136 Xuan Thuy RoadCau Giay DistrictHanoi 100000Vietnam Hanoi University of Mining and Geology Duc Thang WardNorth Tu Liem DistrictHanoi 100000Vietnam Institute of Materials Science Vietnam Academy of Science and Technology18 Hoang Quoc VietHanoi 100000Vietnam Faculty of Basic Sciences Hanoi University of Natural Resources and Environment41 A Phu Dien RoadNorth Tu LiemHanoi 100000Vietnam

This study demonstrates the influence of the Ag^(+)/PO_(4)^(3-)ratio in precursor solution on the crystal structural formation,morphology,physical properties,and photocatalytic performance of a Ag_(3)PO_(4)photocatalyst that is fabricated,using a facile precipitation method,from AgnO_(3)and na2HPO_(4)·12H_(2)*** material characterizations were carried out using x-ray diffraction(XRD),scanning electron microscopy(SEM),energy-dispersive x-ray spectroscopy(EDX),Brunauer–Emmett–Teller(BET)surface area,Fourier transform infrared(FTIR)absorption,Raman scattering,x-ray photoelectron spectroscopy(XPS),UV-vis absorption,and photoluminescence(PL).The results show that Ag_(3)PO_(4)crystallizes better when the excess PO_(4)^(3-)content increases,and the lattice parameters decrease slightly,while the crystal diameter and the particle size *** change is also observed in the Raman scattering and FTIR spectra with the increase in the vibration frequency of the[PO_(4)]*** compression of the[PO_(4)]unit was also confirmed in the XPS spectra with the shift of P 2p peaks toward higher binding *** photocatalytic results showed that the samples synthesized from excess PO_(4)^(3-)solution exhibited higher photocatalytic performance compared to the sample with a Ag^(+)/PO_(4)^(3-)ratio of 3:1.A sample prepared from the precursor solution with a Ag^(+)/PO_(4)^(3-)ratio of 3:1.5 was optimal for RhB decomposition under both visible light and natural sunlight,completely decomposing 10 ppm RhB after 15 minutes of xenon lamp irradiation and after 60 minutes under solar light *** is attributed to the high crystallinity,small particle size and low electron–hole recombination rate of the sample.

关键词： morphology photocatalytic Ag^(+)/PO_(4)^(3-)ratio visible light

Stellate cells regulate nrf2 signaling to orchestrate metabolic changes and ROS detoxification in pancreatic cancer cells

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中国药理学与毒理学杂志 2015年第S1期29卷 86-87页

作者： yuan-sengWU chung-yengLOOI MasamuneATSUSHI Shin-yeeFUnG chungIVy Department of Pharmacology Faculty of Medicine University of Malaya University of Malaya Cancer Research Institute University of Malaya Division of Gastroenterology Tohoku University Graduate School of Medicine Department of Molecular Medicine Faculty of Medicine University of Malaya

OBJECTIVE We previously showed that human pancreatic stellate cells(HPSCs)promote pancreatic ductal adenocarcinoma(PDAC)cell growth by activating nuclear factor erythroid2-related factor 2(nrf2),a key transcriptional regulator of cytoprotective *** aim to investigate whether nrf2-mediated metabolic reprogramming and reactive oxygen species(ROS)detoxification are involved in HPSCs-mediated cell *** nrf2-mediated metabolic genes expression of pentose phosphate pathway(PPP)for purine nucleotide synthesis;glutamine metabolism for nicotinamide adenine dinucleotide phosphate(nADPH)-equivalent producers and also glutathione biosynthesis both for intracellular ROS inactivation were examined using quantitative real-time PCR(qRT-PCR)after treated with conditioned media derived from HPSCs(HPSC-CM)in human PDAC cells(BxPC-3and AsPC-1)with or without nrf2 gene silencing using siRnA-mediated *** involved in PPP for purine nucleotide and nADPH generation were selected and their concentration was measured using UHPLC-MS/***,tiron and n-acetylcysteine(nAC)were used to attenuate the intracellular ROS rendered by nrf2 before measuring PDAC cell growth and also phosphorylation of extracellular signal-regulated kinase(ERK)1/2and protein kinase B(AKT)using MTT and Western blotting,*** Metabolically,HPSC-CMupregulated nrf2-mediated genes involved in three metabolic pathways(G6PD,PGD,TKT,PPAT,MTHFD2,ME1,IDH1,GCLC and GCLM)in BxPC-3and ***-CM was able to upregulate all the metabolic genes after nrf2 gene silencing,and also significantly increased the metabolite concentration of ribose 5-phosphate and inosine 5′-monophosphate,which are involved in nucleotide synthesis for cell *** the intracellular ROS rendered by nrf2 suppressed PDAC cell growth and also phosphorylation of ERK 1/2and AKT *** Our findings reveal that HPSC-CM activates nrf2-mediated metabolic reprogramming,which leads to p

关键词： pancreatic stellate cells pancreatic ductal adenoc

垂体形态正常的特发性生长激素缺乏症与垂体灌注延迟的相关性研究

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国际医学放射学杂志 2011年第2期 172-173页

作者： H.W.chung n.y.Cho 高莉 Department of Electrical Engineering National Taiwan University

目的应用对比剂动态增强MRI对一组特发性生长激素缺乏症(IGHD)而MR影像显示垂体形态正常病人的灌注形态特点进行定量研究。材料与方法此项前瞻性研究

关键词：生长激素垂体内分泌腺缺乏症营养缺乏病特发性