检索结果-南通市图书馆

维普期刊数据库

评价基于肺段水平的形态学肺气肿表型和相应的肺灌注模式的关系

在线全文

学校读者我要写书评

暂无评论

国际医学放射学杂志 2015年第2期 187-188页

作者： M.Bryant s.ley R.Eberhardt R.Menezes F.Herth O.sedlaczek 高飞 Department of Diagnostic and Interventional Radiology University of Heidelberg Heidelberg Germany

摘要目的用CT对不同的形态学肺气肿表型进行评估,显示其特征性的灌注缺陷模式。方法对41例严重肺气肿病人(GOLDⅢ/Ⅳ)进行三维高分辨力CT(3D-HRCT)检查

关键词：肺灌注肺段分辨力小叶型灌注缺损局部病灶胸部放射灌注成像中心型 Radiol

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

国际医学放射学杂志 2012年第3期 292-293页

作者： s.ley J.L.Zaporozhan M.B.Pitton J.schneider G.M.Wirth E.Mayer 董龙春 Department of Diagnostic and Interventional Radiology UniversittsmedizinJohannes Gutenberg UniversityLangenbeckstrasse 155131 MainzGermany

目的探讨对评价慢性血栓栓塞性肺动脉高压(CTEPH)病人肺动脉情况最有价值的成像技术。材料与方法对24例CTEPH病人于3d内分别完成心电门控多层CT血管成像(MD-CTA),对比增强MR血管成像(ce-MRA)和选择性数字减影血管造影(DsA)检查。2名阅... 详细信息

目的探讨对评价慢性血栓栓塞性肺动脉高压(CTEPH)病人肺动脉情况最有价值的成像技术。材料与方法对24例CTEPH病人于3d内分别完成心电门控多层CT血管成像(MD-CTA),对比增强MR血管成像(ce-MRA)和选择性数字减影血管造影(DsA)检查。2名阅片者分别对每种

关键词：慢性血栓栓塞性肺动脉高血压 ECG-门控MD-CTA 对比增强MRA DsA 肺动脉

Four buildings and a flush:Lessons from degraded water quality and recommendations on building water management

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Environmental science and Ecotechnology 2024年第2期18卷 104-113页

作者： Kyungyeon Ra Caitlin Proctor Christian ley Danielle Angert Yoorae Noh Tolulope Odimayomi Andrew J.Whelton Lyles school of Civil Engineering Purdue University550 Stadium Mall DriveWest LafayetteIN47907USA Agricultural and Biological Engineering Division of Environmental and Ecological EngineeringPurdue UniversityWest LafayetteIN47907USA Division of Environmental and Ecological Engineering Purdue UniversityWest LafayetteIN47907USA Civil and Environmental Engineering University of Colorado1111 Engineering DriveBoulderCO80309USA Civil Architectural and Environmental EngineeringUniversity of Texas301E E Dean Keeton StreetAustinTX78712USA Civil and Environmental Engineering Virginia Tech750 Drillfield DriveBlacksburgVA24061USA Lyles school of Civil Engineering Division of Environmental and Ecological EngineeringPurdue University550 Stadium Mall DriveWest LafayetteIN47907USA

A reduction in building occupancy can lead to stagnant water in plumbing,and the potential consequences for water quality have gained increasing *** investigate this,a study was conducted during the COVID-19 pandemic,focusing on water quality in four institutional *** of these buildings were old(>58 years)and large(>19,000 m2),while the other two were new(>13 years)and small(study revealed significant decreases in water usage in the small buildings,whereas usage remained unchanged in the large *** analysis found that residual chlorine was rarely detectable in cold/drinking water ***,the pH,dissolved oxygen,total organic carbon,and total cell count levels in the first draw of cold water samples were similar across all ***,the ranges of heavy metal concentrations in large buildings were greater than observed in small ***(Cu),lead(Pb),and manganese(Mn)sporadically exceeded drinking water limits at cold water fixtures,with maximum concentrations of 2.7 mg Cu L^(-1),45.4 mg Pb L^(-1),1.9 mg Mn L^(-1).Flushing the plumbing for 5 min resulted in detectable residual at fixtures in three buildings,but even after 125 min of flushing in largest and oldest building,no residual chlorine was detected at the fixture closest to the building's point of *** the pandemic,the building owner conducted fixture flushing,where one to a few fixtures were operated per visit in buildings with hundreds of fixtures and multiple ***,further research is needed to understand the fundamental processes that control faucet water quality from the service line to the *** the absence of this knowledge,building owners should create and use as-built drawings to develop flushing plans and conduct periodic water testing.

关键词： COVID-19 pandemic stagnation Drinking water quality Flushing

stricture Free survival after Urethroplasty: A 6-Year Malaysian Referral Centre Experience

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Urology 2024年第8期14卷 474-485页

作者： Jeffrey Jiajian Lee ley Khim Teo Jieling Cheng Hamid Ghazali Urology Department Hospital Tengku Ampuan Afzan Kementerian Kesihatan Malaysia Putrajaya Malaysia Clinical Research Centre Hospital Pulau Pinang Kementerian Kesihatan Malaysia Putrajaya Malaysia Institute for Clinical Research National Institutes of Health Ministry of Health Malaysia Kuala Lumpur Malaysia

Background: Urethroplasty is the gold standard for treatment for urethral strictures. We describe our results of urethroplasty and analyse the risk factors associated with stricture recurrence and stricture-free survival. Methods: A retrospective review of urethroplasty surgery carried out from 2016-2022. Patient records were analysed to obtain demographics, clinical, pathological and outcome data. success of surgery is defined as postoperative Qmax > 15 ml/s or absence of any instrumentation of urethra such as urethral dilatation, after removal of urethral indwelling catheter. Results: A total of 66 patients who fulfilled the inclusion criteria were selected. Mean age was 43.8. Mean follow up was 27.2 ± 21.8 months. stricture recurred in 18 patients (27.3%). Estimated stricture free survival time was 59.6 months (95% CI: 50.87 - 68.37). Previous surgical history for stricture was found to be predictive of stricture recurrence. After adjusting for age, BMI, aetiology of stricture and stricture length, previous surgical history had a risk of stricture recurrence approximately three times higher compared to those without. Conclusion: Previous surgical intervention for urethral stricture was found to be the most significant factor for stricture recurrence. We strongly advocate that the first curative surgery done for urethral strictures should be done in high volume centres and by experienced reconstructive urologists.

关键词： Urethroplasty Urethra stricture Recurrence Factors survival Reconstructive Urology

Quantification of In Vivo Epidermal Keratinocyte Architecture Associated with the signs of skin Aging and the skin Benefit Evaluation by Application of Galactomyces Ferment Filtrate (Pitera)-Containing skin Care Product

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Cosmetics, Dermatological sciences and Applications 2024年第1期14卷 12-28页

作者： Kukizo Miyamoto Yoko Munakata Keisuke Fujii Chenlu Lei ley Yang suda sudarsana Masutaka Furue Research and Development Kobe Innovation Center Procter and Gamble Innovation GK Kobe Japan Global scientific Communications P & G Guangzhou Ltd. Guangzhou China Department of Dermatology Graduate School of Medical Sciences Kyushu University Fukuoka Japan

Background: Aged skin exhibits visual alterations such as wrinkles, rough texture, pore dilation, and dull skin tone, as well as physiological aging, namely, decreased hydration and increased transepidermal water loss (TEWL). Recent advances in coherence tomography have also revealed that skin aging affects in vivo epidermal keratinocyte architecture. However, the interconnectivity between spatial architectural aging and visual/physiological aging parameters remains largely unknown. Purpose: To elucidate whether the tomographic keratinocyte architectural aging is correlated with visual and physiological skin aging parameters and to quantitatively evaluate the improvements of the architectural, visual, and physiological aging parameters by the daily treatment of the skin care formula containing Galactomyces Ferment Filtrate (GFF, 8X Piterasup>TMsup>). Method: We measured the in vivo keratinocyte cellular architecture with two-photon stereoscopic tomography obtaining by-layer epidermal section images in 78 Asian females of various ages. Visual aging parameters were analyzed using a portable image capture system. Hydration and TEWL were also assessed. The anti-aging effects of GFF-containing skin moisturizer (sK-II LXP Creamsup>TMsup>) were also examined in two studies after twice-daily application for 2 (N = 35) and 4 (N = 32) weeks. Results: As for the keratinocyte cellular architecture, skin aging was significantly associated with decreased cell density and increased cell uniformity. These architectural aging parameters were significantly correlated with visual and physiological aging parameters, namely, rough texture, wrinkles, pore dilation, dull skin tone, dehydration, and increased TEWL. The strong interconnectivity allowed us to develop formulae to estimate the keratinocyte architecture from visual aging parameters. Moreover, twice-daily application of sK-II significantly improved the keratinocyte architecture associated with multiple skin aging visual an

关键词： Facial skin Aging In Vivo Keratinocyte Cellular Architecture Visual Aging Pa-rameter Dehydration Interconnectivity New Trajectory Galactomyces Fer-ment Filtrate PiteraTM sK-II LXP CreamTM

six Amino Acids among Natural Moisturizing Factors Responsible for skin Hydration: Improvement and Anti-Aging of skin by Galactomyces Ferment Filtrate-PiteraTM Containing skin Moisturizer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Cosmetics, Dermatological sciences and Applications 2024年第2期14卷 113-127页

作者： Kukizo Miyamoto Yoko Munakata Keisuke Fujii Wang summer ley Yang suda sudarsana Masutaka Furue Research and Development Kobe Innovation Center Procter and Gamble Innovation GK Kobe Japan Global scientific Communications P & G Guangzhou Ltd. Guangzhou China Department of Dermatology Graduate School of Medical Sciences Kyushu University Fukuoka Japan

Background: Natural moisturizing factors (NMFs) are filaggrin-derived components in the cornified layer that are critical for maintaining healthy skin moisturization and barrier function. However, studies have reported conflicting findings on the relationship between NMF levels and aging, while few studies have investigated this relationship clinically. To fill this research gap, we determined the levels of major NMF components such as free amino acids, pyrrolidone carboxylic acid, and urocanic acids, and individually verified their relationships with skin hydration, barrier function, age, and skin aging. Purpose: The objective of this study was to clinically investigate the relationship between NMF components levels and skin aging in facial skin. The main NMF components were obtained from facial skin and quantified. We then selected NMF components showing strong relationships to skin hydration, and analyzed the relationships of the levels of these selected NMF components with signs of skin aging, namely, texture, pores, wrinkles, and dullness (L-value). We also examined the efficacy of treatment with a skin care formula (sK-II Facial Treatment Essence, called sK-II FTE hereafter) including Galactomyces ferment filtrate (GFF, PiteraTM) on the selected NMF component levels associated with skin hydration and barrier function, and the signs of skin aging of texture, pores, wrinkles, and dullness (L-value). Method: We conducted two clinical trials in this research. In study 1, we measured 23 NMF components using tape-stripped cornified layer to quantify them via an HPLC method in 196 Asian females aged 20 to 59 (mean s.D., 38.6 9.4). Facial visual aging parameters [texture, pores, wrinkles, and dullness (L-value)], as well as elasticity (R7), skin hydration, and TEWL, were quantified using facial skin imaging and skin physical property measurement devices. study 2 was performed to evaluate whether the facial application of sK-II FTE affects the NMF levels and skin aging

关键词： NMF Amino Acid Visual Aging Parameter Hydration Aging Texture Pore Wrinkle Dullness Galactomyces Ferment Filtrate PiteraTM sK-II Facial Treatment Essence

Effect of Eu3+,Bi3+,and Li+ doping on luminescent property of GdNbO4

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第1期42卷 66-75页

作者： s.W.Wi Y.s.Lee Department of Physics and Integrative Institute of Basic sciences Soongsil University

We investigated the emission properties of Eu3+-doped GdNbO4-based oxide phosphors,aiming at improving the Eu3+emission by codoping of Bi3+and Li+.Eu3+singly doped,Eu3+and Bi3+doubly doped,and Eu3+,Bi3+,and Li+triply doped GdNbO4were prepared using a high-temperature solid-state reaction *** red-orange emissions from Eu3+in the singly doped samples are significantly improved by the codoping of Bi3+,mainly due to the energy transfer from Bi3+to Eu3+.The additional codoping of Li+is found to increase the Eu3+emission *** improvement might be attributed to the increase in the photoluminescent quantum yield originating from larger grain sizes and better crystallinity.A detailed analysis of the X-ray diffraction pattern and the asymmetric ratio estimated from the photoluminescence spectra show that the local lattice environment around Eu3+in GdNbO4does not change significantly with the codoping of Bi3+and Li+.Our results indicate that Li+doping is a promising way to improve the emission properties of rare-earth ion-doped GdNbO4phosphors.

关键词： Eu 3+ GdNbO 4 Codoping of Li + Photoluminescence sensitizer Rare earths

First evidence for chiral wobbling of triaxial nuclei

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nuclear science and Techniques 2024年第7期35卷 4-7页

作者： s.Frauendorf Department of Physics and Astronomy University of Notre DameNotre DameIN 46556USA

Chirality(Greek“handiness”)is a property of many com-plex *** molecules exist in two forms,one being the mirror image of the *** for our hands,it is impossible to make the images identical by a suitable *** two forms are called left-handed and *** have the same binding energy,because the electro-magnetic interaction,which holds the molecule together,does not change under a *** properties that are insensitive to the geometry are also the *** different geometry is the reason why the left-handed form turns the polarization plane of transmitted light in one direction by some angle while the right-handed form turns it in the oppo-site direction by the same ***,the geometrical differences between the two species may have other *** two species of the carvon molecule shown in Fig.1 taste quite differently.

关键词： turns Chiral mirror

维普期刊数据库

Tribological behavior of lubricant-impregnated porous polyimide

在线全文

学校读者我要写书评

暂无评论

Friction 2024年第4期12卷 711-725页

作者： Jinbang LI Ningning ZHOU Janet s.s.WONG school of Mechanical Engineering and Mechanics Ningbo UniversityNingbo 315211China Beijing Key Laboratory of Long-life Technology of Precise Rotation and Transmission Mechanisms Beijing Institute of Control EngineeringBeijing 100029China Department of Mechanical Engineering Imperial College LondonLondon SW72AZUK

Porous materials impregnated with lubricants can be used in conditions where limited lubricant is *** this work,three porous polyimides(PPI)with different densities were ***(PAO)impregnated PPI(iPPI)discs were rubbed against steel and sapphire *** operando observations of the iPPI-sapphire contacts show that oil is released under an applied load,forming a meniscus around *** at the outlet is created at high sliding *** amount of released oil increases with increasing PPI *** moduli,E*,estimated based on the actual contact size show that trapped oil in iPPIs contributes to load *** higher speeds,tribological rehydration of the contact occurs in low density iPPI,with that E*rises with *** high density PPIs,high speeds give a constantly high E*which is limited by the viscoelastic properties of the PPI network and possibly the rate of oil *** of iPPI-steel contacts is governed by the mechanical properties of the PPI,the flow of the lubricant,and the roughness of the PPI *** low-and medium-density(highly porous,high roughness)PPIs,large amount of oil is released,and lubrication is mainly via lubricant restricted in the contact in the pores and possibly tribological *** high density(low porosity)PPI,with lower roughness,hydrodynamic lubrication is achieved which gives the lowest *** results show that polymeric porous materials for effective lubrication require the optimization of its surface roughness,stiffness,oil flow,and oil retentions.

关键词： polyimide porous material friction mechanism polymer limited lubrication