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Discussion on the Treatment of Palmoplantar Keratosis by TCM Soaking and Washing
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作者 Yufu FANG Yanshen HU +2 位作者 Juntao XU Li WANG Wenyu ZHAO 《Medicinal Plant》 CAS 2023年第3期66-69,共4页
By combing the mechanism and advantages of traditional Chinese medicine(TCM)soaking and washing and combining TCM syndrome differentiation with western medicine differentiation of diseases,guided by the view that"... By combing the mechanism and advantages of traditional Chinese medicine(TCM)soaking and washing and combining TCM syndrome differentiation with western medicine differentiation of diseases,guided by the view that"the principle of external treatment is that of internal treatment",this article discusses the differentiation and treatment ideas of palmoplantar keratosis by TCM soaking and washing,which will provide a reference for clinical treatment. 展开更多
关键词 TCM soaking and washing Palmoplantar keratosis Skin diseases
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Water, Sanitation and Hygiene in Lower-Level Health Care Facilities of Dar es Salaam Region in Tanzania: Status towards Achieving the Sustainable Development Goals and Way Forward
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作者 Mariam Mahamudu Hussein Mohamed +8 位作者 Michael Habtu Dennis Rweyemamu Anyitike Mwakitalima Amour Seleman Erick Mgina Khalid Massa Grace Saguti Andre Arsene Bita Fouda Zabulon Yoti 《Advances in Infectious Diseases》 CAS 2024年第1期279-295,共17页
Background: Improving Water, Sanitation and Hygiene in health care settings is a critical prerequisite for achieving national health goals and Sustainable Development Goals (SDGs). The World Health Organization (WHO) ... Background: Improving Water, Sanitation and Hygiene in health care settings is a critical prerequisite for achieving national health goals and Sustainable Development Goals (SDGs). The World Health Organization (WHO) has set a target for each United Nations member state to reach by 2030. Each member state is required to reach by 2022, 2025 and 2030 at least 60%, 80% and 100%, respectively of basic level of service of the five elements which are water, sanitation, hygiene, waste management and environmental cleaning. Methods: This study aimed to evaluate and document the current state of basic water, sanitation, and hygiene services in all lower-level health care facilities in the Dar es Salaam region of Tanzania as of July 2022. A cross-sectional study was conducted in 99 public dispensaries in the Dar es Salaam region’s five councils: Ubungo, Kigamboni, Kinondoni and Temeke Municipalities, and Ilala City. The interviewee form and observational checklists were both digitalized using the Kobo tool software. The respondents were health care facility in-charges or nurse in-charges. Data were downloaded, validated, and imported to Stata version 15 for analysis. Results: The basic WASH level per JMP is far below the target in 2022. Each member state by 2022 is required to reach at least 60% of the basic level of service of each element. We found a low coverage of basic WASH in the 99 dispensaries included in this study. The basic WASH coverage was met in only 10 (10.1%) of the dispensaries, while the remaining 89 (89.9%) dispensaries fall on limited WASH services. Conclusion: This study revealed lower coverage of basic WASH services in dispensaries. An urgent need is required to improve the status of WASH in all the dispensaries and facilitate the provision of quality health care services, patient safety and reduce health care associated infections. 展开更多
关键词 Dispensaries Low Level Health Care Facilities Service Levels Basic wash Dar es Salaam
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Effect of Water Washing Pre-treatment on the Properties of Glass-ceramics from Incinerator Fly Ash Using Electronic Arc Furnace 被引量:5
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作者 刘汉桥 WEI Guoxia ZHANG Rui 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2013年第1期62-68,共7页
Production of glass-ceramics by sintering the molten slag obtained from electric arc furnace treatment of fly ash was investigated. The effect of washing pretreatment prior to melting the fly ash on the microstructure... Production of glass-ceramics by sintering the molten slag obtained from electric arc furnace treatment of fly ash was investigated. The effect of washing pretreatment prior to melting the fly ash on the microstructure and properties of the glass-ceramics was examined. The results show that washing pretreatment of fly ash can decrease alkali metal chloride and increase network former in fly ash, which results in the increase of peak crystallization temperature of parent glass and strengthening of properties of bending strength and chemical stability of the glass-ceramics. The optimal heat treatment temperature for parent glass of washed fly ash is 1 173 K, at which the crystalline phase of glass-ceramics is composed of gelignite (Ca2A12SiO7) and akermanite (Ca2MgSi207). Glass-ceramics produced at optimal heat treatment temperature are excellent in term of the physical and chemical properties and leaching characteristics, indicating attractive potential as substitute of nature materials. 展开更多
关键词 waste incineration fly ash ARC-MELTING GLASS-CERAMICS water washing
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Plasma-induced graft polymerization on the surface of aramid fabrics with improved omniphobicity and washing durability 被引量:1
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作者 Eshraga A A SIDDIG Yu XU +4 位作者 Tao HE Ming GAO Baojing YANG) Tianshu WANG Jing ZHANG 《Plasma Science and Technology》 SCIE EI CAS CSCD 2020年第5期105-113,共9页
Durable superomniphobic surfaces are desirable for their practical applications,including selfcleaning,non-fouling,protective clothing and the separation of liquids.The plasma-induced polymerization of environmentally... Durable superomniphobic surfaces are desirable for their practical applications,including selfcleaning,non-fouling,protective clothing and the separation of liquids.The plasma-induced polymerization of environmentally friendly C6 from a perfluoralkyl methlacrylate copolymer emulsion,AG-E081,was performed and a durable omniphobic fabric was achieved.C6 is an ecological alternative to C8(eight CF2 groups)fluorinated compounds,and it was thereafter successfully incorporated into aramid fabric to achieve a durable superomniphobic surface.The fabric became water and oil repellent with an extremely high water contact angle of 180°.As tested by the water spray AATCC test and hydrocarbon resistance test,the as-prepared fabric gained 100°(ISO 5)and grade number 4 respectively.Furthermore,the fabrics also showed significantly improved washing durability after ten washing cycles.By scanning electron microscopy(SEM),Fourier-transform infrared spectroscopy(FTIR)and x-ray photoelectron spectroscopy(XPS)tests,it is indicated that the durable superomniphobicity can be attributed to the roughness and activation of the aramid surface by the plasma pre-treatment,which induces more adsorption and chemical graft of the C6 copolymer. 展开更多
关键词 aramid fabrics plasma-induced graft polymerization hydrocarbon resistance water repellency washing durability
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Research and Application of the Mathematic Model for the Washing Shrinkage of Woven Fabric 被引量:1
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作者 傅菊芬 白伦 《Journal of Donghua University(English Edition)》 EI CAS 2007年第2期161-164,172,共5页
Having analyzed the relationships between washing shrinkage and weaving technique, parameters, material properties of woven fabrics and studied the shrinkage mechanism and its mathematical model of the plain fabric, r... Having analyzed the relationships between washing shrinkage and weaving technique, parameters, material properties of woven fabrics and studied the shrinkage mechanism and its mathematical model of the plain fabric, researchers set up a shrinkage model of the twills and satins and proposed a method for calculating the washing shrinkage based on weaving technique and parameters of fabrics. Shrinkage experiments of silk habotai, silk twill and silk satin fabrics were performed. The results were compared with those of the theoretical computations, and theoretical method is reliable. 展开更多
关键词 twill fabric satin fabric fabric parameter washing shrinkage mathematical model
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Application of Electrocoagulation and Electrolysis on the Precipitation of Heavy Metals and Particulate Solids in Washwater from the Soil Washing 被引量:1
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作者 Ho Y. Shim Kyo S. Lee +7 位作者 Dong S. Lee Dae S. Jeon Mi S. Park Ji S. Shin Yun K. Lee Ji W. Goo Soo B. Kim Doug Y. Chung 《Journal of Agricultural Chemistry and Environment》 2014年第4期130-138,共9页
Soil washing, ex situ mechanical technique, is one of the few permanent treatment alternatives to remove metal contaminants from soils by employing physical separation based on mineral processing technologies to remov... Soil washing, ex situ mechanical technique, is one of the few permanent treatment alternatives to remove metal contaminants from soils by employing physical separation based on mineral processing technologies to remove discrete particles or metal-bearing particles and/or chemical extraction based on leaching or dissolving process to extract the metals from the soils into an aqueous solution. However, washwater remained from soil washing process contains discrete particulate particles along with heavy metals as solution phase to be treated separately, as well as this process can produce large amount of sludge that requires further treatment, slow metal precipitation, poor settling, the aggregation of metal precipitates. Electrical treatments including electrocoagulation and electrolysis can be effective in removing these substances from washwater. This paper reviews the theoretical models in applying electrocoagulation and electrolysis to remove heavy metals and discrete particulate particles in washwater by examining and comparing the status of washwater treatment technologies which have been undertaken, mostly in the US and EU for the period 1990-2012. 展开更多
关键词 ELECTROCOAGULATION ELECTROLYSIS PRECIPITATION Heavy Metals washwater Soil washING
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Surfactant-Enhanced Washing of Soils Contaminated with Wasted-Automotive Oils and the Quality of the Produced Wastewater 被引量:1
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作者 Montserrat Zacarias-Salinas Mabel Vaca +2 位作者 Miguel A. Flores Erick R. Bandala Luis G. Torres 《Journal of Environmental Protection》 2013年第12期1495-1501,共7页
An old automotive industrial site located at Mexico City with many years of operation and contaminated with heavy oil hydrocarbons, particularly spent oils, was assessed for restoration using the surfactant enhanced s... An old automotive industrial site located at Mexico City with many years of operation and contaminated with heavy oil hydrocarbons, particularly spent oils, was assessed for restoration using the surfactant enhanced soil washing (SESW) process. The main goal of this study was to characterize the contaminated soil in terms of TPHs, BTEX, PAHs, and metals contents as well as microbiologically (total heterotrophs and specific degrading microorganisms). We also aimed to determine the surfactant type and concentration to be used in the SESW process for the automotive waste oil contaminated soil. At the end, sixteen kg of contaminated soil were washed and the produced wastewater (approximately 40 L) was characterized in terms of COD, BOD;solids, and other physico-chemical parameters. The soil contained about 14,000 mg of TPH/kg soil (heavy fraction), 0.13 mg/kg of benzo (k) fluoranthene and 0.07 mg/kg of benzo (a) pyrene as well as traces of some metals. Metals concentrations were always under the maximum concentration levels suggested by Mexican regulations. 15 different surfactants were used to identify the one with the capability to achieve the highest TPH removal. Surfactants included 5 anionics, 2 zwitterionic, 5 nonionics and 3 natural gums. Sulfopon 30 at a concentration of 0.5% offered the best surfactant performance. The TPH removals employing the different surfactants were in the range from 38% to 68%, in comparison to the soil washing with water (10% of TPH removal). Once the surfactant was selected, 70 kg of soil were washed and the resulting water contained approximately 1300 mg/L of COD, 385 mg/L of BOD (BOD/COD = 0.29), 122 mg/L of MBAS, and 212 mg/L of oil and greases, among other contaminants. 展开更多
关键词 Wasted Automotive OILS SURFACTANTS Soil washING Waste Water
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Isolation of Iron Bacteria from Washing Sludge Filters Kolda (Senegal) Water Treatment Station and Study of the Kinetics of Biological Degradation of the Iron (II) 被引量:1
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作者 Mamadou Faye Falilou Mbacké Sambe +3 位作者 Modou Dieng Alpha Ousmane Touré Matar Faye Codou Guèye Mar Diop 《Open Journal of Metal》 2019年第3期19-32,共14页
In the present work, the treatment of synthetic waters doped with iron (II) has been studied. The treatment mechanism used in this study is the biological oxidation which consists, in test tubes, of bringing bacteria ... In the present work, the treatment of synthetic waters doped with iron (II) has been studied. The treatment mechanism used in this study is the biological oxidation which consists, in test tubes, of bringing bacteria isolated on Petri dishes into contact with water containing divalent iron (II). These de-ironing bacteria (non-specific bacteria) are used to carry out laboratory biological oxidation experiments on iron (II) under different pH conditions (pH = 3.4 - 3.6, pH = 7.3 - 7.5 and pH = 9.8 - 10) and variable concentration of iron (II). Biological treatment trials included different concentrations of iron during time intervals of a day. Examination of the elimination kinetics of Iron (II) indicates a removal rate of 59.453% for an initial iron concentration in the synthetic solution of 1 mg&middot;L&minus;1 at basic pH (pH = 9.8 - 10). Therefore, the degradation of divalent iron by this method seems to be quite effective, but it should be noted that biological nitrification is impaired by the presence of high iron concentrations above 5 mg&middot;L&minus;1. 展开更多
关键词 BIODEGRADATION Bacteria washING MUD IRON KINETICS Efficiency
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Synthesis of Super Plasticizer NF-30 from Coal Coking by Product Washing Oil and Performance Analysis
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作者 徐子芳 ZHANG Mingxu HU Wenpei 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2013年第5期1012-1016,共5页
Super plasticizer was synthesized by using coal coking by product washing oil and industrial naphthalene. The results show that sulfonationt time (2.5 h), sulfonation temperature (160 ℃) and condensation time (5... Super plasticizer was synthesized by using coal coking by product washing oil and industrial naphthalene. The results show that sulfonationt time (2.5 h), sulfonation temperature (160 ℃) and condensation time (5.0 h) are key factors. Adding oxidizing agent MO in the course of synthesis can decrease the emission of SO2 in exhaust (20%). Compared with NF, NF-30 have some advantages in lower cost, high water reducing rate (19.7%) and optimum early strengths. Moreover, TGA-DTA and SEM analysis were adopted to research the NF-30 modified concrete on hydyation mechanism. The analysis show that, compared with NF, there are a large number of hydration products such as Ca (OH)2, C-S-H, AFt etc of NF-30, the structure of NF-30 is dense and the performance is good. 展开更多
关键词 washing oil super plasticizer TGA-DTA-thermo analysis SEM-scan analysis
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Emission Behaviors of Submicron Particles(PM_(1))Generated by the Combustion of Sesame Stalk after Combined Water Washing and Carbonization Pretreatment
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作者 Tianyu Liu Chang Wen +5 位作者 Wenyu Wang Kai Yan Yongjun Xia Rui Li Juan Liu Yang Zhang 《Energy Engineering》 EI 2021年第3期473-485,共13页
Pretreatment before biomass combustion is significant for its efficient utilization and that combined water washing and carbonization can be efficient.An agricultural processing residues sesame stalk was selected and ... Pretreatment before biomass combustion is significant for its efficient utilization and that combined water washing and carbonization can be efficient.An agricultural processing residues sesame stalk was selected and carried out two pretreatments separately,i.e.,water washing-torrefaction(W-T)and torrefaction-water washing(T-W),to explore the effect on the fuel properties,combustion characteristics and particulate matter(PM)emission.The obtained biochar was also combusted under air and oxy50(CO_(2):O_(2)=50:50)conditions for the sake of investigating the effect of pretreatment and combustion atmosphere.The results indicate that,W-T and T-W both not only have great effect on the improvement of fuel properties but also reduce the content of water-soluble elements like K,Cl,etc.Due to the difference in hydrophobicity,the biochar obtained by W-T have the optimal fuel properties.At the same time,the pretreatment also hinder the combustion in a certain extent in which the comprehensive combustion characteristics(SN)show a downward trend.Furthermore,both two pretreatments have obvious benefit on the reduction of PM_(1)emission and W-T have the best effect related to the higher removal efficiency of inorganic elements(especially K+Na+Cl+S).Under oxy50 condition,the oxygen concentration and combustion temperature is higher,improving the sulfation of K and vaporization of Ca,P and Mg which result in weakening in the pretreatment reduction effect on PM_(1)emission. 展开更多
关键词 Biomass TORREFACTION water washing OXY-FUEL PM_(1)
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Evaluate the Strength of Denim Goods Using Different Washing Technique
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作者 Jakaria Ahamed Md. Faysal Mahmud +5 位作者 Md. Faysal Ahammed Rony Mia Md. Zahid Hasan Tarequl Hasan Khan Golam Qibria Limon Al Mojnun Shamim 《Journal of Materials Science and Chemical Engineering》 2021年第3期1-8,共8页
Day by day, the demand and popularity of denim have increased. With the increase in demand for denim, washing has also increased. When we washed a piece of denim fabric, then its properties also changed. The propertie... Day by day, the demand and popularity of denim have increased. With the increase in demand for denim, washing has also increased. When we washed a piece of denim fabric, then its properties also changed. The properties are tensile strength, GSM, color fading, stiffness, abrasion resistance, moisture regain, etc. In this study, we conduct different washing processes on denim fabric such are Stonewash, Caustic wash, Acid wash, Normal wash, Pigment wash, Sandblasting, and Super whitewash. After washing, the properties of denim fabric have been analyzed especially strength. The tear and tensile strength were measured by ISO standard. From the above washing method, Normal & pigment wash showed good strength properties comparing with others. 展开更多
关键词 Denim Fabric washing Treatment Tear Strength Tensile Strength Normal wash Pigment wash
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Heavy Metal Analysis in Groundwater in the Vicinity of Distillery Spent Wash Evaporation Ponds
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作者 Muhammad Tariq Mahar Muhammad Yar Khuhawar +1 位作者 Taj Muhammad Jahangir Mushtaq Ahmad Baloch 《Journal of Chemistry and Chemical Engineering》 2013年第8期779-790,共12页
The study was conducted to assess the effect of evaporation ponds of an ethanol distillery spent wash on groundwater, with a reference to heavy metal contamination. The distillery discharging 11,880 m3 spent wash per ... The study was conducted to assess the effect of evaporation ponds of an ethanol distillery spent wash on groundwater, with a reference to heavy metal contamination. The distillery discharging 11,880 m3 spent wash per day is extremely loaded with minerals and chemical oxygen demanding organic substances. The groundwater around the evaporation ponds is used for drinking and irrigation purposes. Thirty-five representative samples (three spent wash, two drainage water and 30 groundwater) were examined for 13 different parameters: pH, TDS (total dissolved solids), COD (chemical oxygen demand), the heavy metal Cd, Co, Cr, Cu, Fe, Mn, Ni, Zn, Pb and As concentrations. The physico-chemical parameters were found in following range pH 7.2-7.7 & 6.8-7.7, TDS 24,448-28,608 mg/L & 302-4,406 mg/L, COD 20,080-24,320 mg/L & 0.0-53 mg/L, Cd 190-140 μg/L & 1.5-8.7 μg/L, Co 1,240-1,987 μg/L & 20.5-87.2 μg/L, Cr 1,020-1,330 μg/L & 14.4-38.1 μg/L, Cu 5,200-6,300 μg/L & 15.0-109.3 μg/L, Fe 2,910-3,242 μg/L & 0-860 μg/L, Mn 49,900-59,500 μg/L & 16.3-138.7 μg/L, Ni 1,430-1,760 μg/L & 8.0-107.7 μg/L, Zn 3,359-5,250 μg/L & 0.0-850 μg/L, Pb 8.9-9.8 μg/L & BD (below detection)-8.7 μg/L, As 5.0 μg/L & BD-10.0 μg/L for spent wash and groundwater samples, respectively. The drainage water samples had parameters within limits for industrial effluents. The spent wash samples contained metal ions higher than the permissible limits for industrial effluents and the samples of groundwater collected around the evaporation ponds contained higher concentrations of metal ions as compared to samples collected away from the evaporation ponds. Coefficient of correμtion among 11 parameters was calcuμted and contamination index was also determined, 33.3% of groundwater samples mostly collected around evaporation ponds had a contamination index above 3 and are considered extremely polluted. 展开更多
关键词 GROUNDWATER DISTILLERY spent wash heavy metal pollution.
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Study on Comparison between Enzyme Wash and Bleach Wash (Traditional vs. Sustainable Washing Machine) the Physical and Color Fastness to Rubbing Properties of Denim Garments
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作者 Shohidul Islam Shamim Md. Iusuf Khan +1 位作者 Shaukat Hossan Mohammed Reaz Uddin 《Journal of Textile Science and Technology》 2020年第3期123-129,共7页
This study focuses on<span style="font-family:;" "=""> </span><span style="font-family:Verdana;">comparison between Enzyme Wash and Bleach Wash (Traditional vs. Sus... This study focuses on<span style="font-family:;" "=""> </span><span style="font-family:Verdana;">comparison between Enzyme Wash and Bleach Wash (Traditional vs. Sustainable Washing Machine) the physical and color fastness to rubbing properties</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">of denim garments.</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">For this experiment indigo dyed cotton denim garments (trousers) were chosen which</span><span style="font-family:Verdana;"> were </span><span style="font-family:Verdana;">98% cotton and 2% spandex and processed by enzyme with the concentration of 2 g/l, </span><span style="font-family:Verdana;">and the </span><span style="font-family:Verdana;">temperature </span><span style="font-family:Verdana;">of </span><span style="font-family:Verdana;">45<span style="color:#555554;font-family:Helvetica, Tahoma, Arial, sans-serif;font-size:14px;white-space:normal;background-color:#FFFFFF;">°</span>C. In another work, enzyme treated denim garments </span><span style="font-family:Verdana;">were </span><span style="font-family:Verdana;">used for bleach wash with the concentration of 2 g/l, temperature 45<span style="white-space:normal;color:#555554;font-family:Helvetica, Tahoma, Arial, sans-serif;font-size:14px;background-color:#FFFFFF;">°</span><span style="font-family:Verdana;white-space:normal;">C</span> and those samples ha</span><span style="font-family:Verdana;">ve</span><span style="font-family:Verdana;"> been processed by traditional and sustainable washing machine. After completing process, the sample properties have been compared like rubbing, tearing and tensile properties. After comparing result the</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">color fastness to rubbing of enzyme wash was poor in traditional and sustainable machine</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">and</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">tensile strength, tearing strength properties down in traditional machine but the</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">color fastness to rubbing of bleach wash was </span><span style="font-family:Verdana;">good</span><span style="font-family:Verdana;"> in sustainable machine than traditional machine</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">and a little bit lesser tensile and tearing properties in sustainable process.</span> 展开更多
关键词 Denim Garments Enzyme wash Bleach wash Sustainability Tensile and Tearing Strength C.F to Rubbing
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Clinical efficacy of combined skin acupuncture and external washing therapy of Zhuang nationality medicine in the treatment of chronic eczema
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作者 Zu-Ling Jiang An Huang +3 位作者 Gui-Yan Deng Jing Xu Jing Tang Feng-Zhen Liang 《Traditional Medicine Research》 2018年第5期237-242,共6页
To evaluate the clinical efficacy of combined skin acupuncture and external washing therapy of Zhuang nationality medicine in the treatment of chronic eczema.Methods:One hundred and twenty patients with chronic eczema... To evaluate the clinical efficacy of combined skin acupuncture and external washing therapy of Zhuang nationality medicine in the treatment of chronic eczema.Methods:One hundred and twenty patients with chronic eczema were randomly divided into an experimental group(60 cases)and a control group(60 cases).The experimental group was treated with skin acupuncture combined with external washing therapy,and the control group was treated with externally applied mometasone furoate cream.The patients’symptoms and total severity were scored and analyzed before and after the 4-week treatment.The symptoms scored included:erythema,papule/hard swelling,epidermal exfoliation,mossy lesion,exudation/scab,and pruritus.Clinical efficacy and adverse reactions were compared before and after the 4-week treatment.Results:Scores for the different kinds of skin derogation,pruritus symptoms,the eczema area,and severity index(EASI)were all reduced after the treatments.Pruritus symptoms and EASI scores in the experimental group were lower than those of the control group(P<0.05).The total effective rate in the experimental group was 81.03%,which was much higher than the 61.11%in the control group(Z=-2.391,P=0.017).Conclusion:The clinical efficacy of combined skin acupuncture and external washing therapy of Zhuang nationality medicine in the treatment of chronic eczema was better than that of mometasone furoate cream. 展开更多
关键词 Chronic eczema Skin acupuncture of Zhuang nationality medicine External washing of Zhuang nationality medicine
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Bauxite washing for the removal of clay
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作者 Ishaq Ahmad Ernst-Ulrich Hartge +1 位作者 Joachim Werther Reiner Wischnewski 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2014年第11期1045-1051,共7页
Clay impurities associated with bauxite negatively affect the Bayer process for alumina production. These impurities should be removed as far as possible by a beneficiation technique before the ore is used as feed for... Clay impurities associated with bauxite negatively affect the Bayer process for alumina production. These impurities should be removed as far as possible by a beneficiation technique before the ore is used as feed for the Bayer process. In this current investigation, bauxite washing was conducted in the laboratory. Bauxite washing is a physical process that causes the disintegration and deagglomeration of the clay matrix, and bauxite is liberated from the clay(mainly rich in silica). Subsequently, separation occurs with the assistance of wet screening at a predetermined cut size. Three techniques were investigated in the laboratory: drum washing, water-jet washing, and ultrasonic washing. Various operating parameters were investigated for drum washing and water-jet washing, including materials retention time, drum rotation speed, solid concentration, water-jet spray duration, pressure, and height. We concluded that the retention time of bauxite inside the drum at a solid concentration of 55wt% and a drum rotation speed of 31 r/min is the dominant parameter for the removal of clay from the bauxite surface. 展开更多
关键词 beneficiation bauxite washing clay Bayer process
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The Influence of Surface Energy on the Washing Quality of Filter Cakes
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作者 Markus Wilkens Urs A. Peuker 《Advances in Chemical Engineering and Science》 2011年第4期252-255,共4页
The washing of filter cakes, especially the displacement washing, represents an important aspect in science researches and industrial applications. A lot of ongoing researches are focussed on impurities, which are dis... The washing of filter cakes, especially the displacement washing, represents an important aspect in science researches and industrial applications. A lot of ongoing researches are focussed on impurities, which are dissolved in the mother liquid (e.g. sodium chloride) and washed out with the identical pure liquid without impurities. The project flushing focuses on systems with two chemically different liquids. The main aim is to exchange an organic solvent by water. This article focuses on the adsorption effects during a washing process with solid systems of different wetting behaviours. 展开更多
关键词 FILTER CAKE washING Surface Energy Effects RESIDUAL CONTENT
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Investigation on Effect of Acid Wash with Thermocol Ball on Physical Properties of Knitted Garments
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作者 Elias Khalil Masud Rana +2 位作者 Jewel Faria Md. Al-Amin Islam Md. Sohel Rana 《Journal of Textile Science and Technology》 2016年第2期16-21,共6页
Washing is considered as the final process of garments finishing. Acid washing is one kind of finishing treatment used for making sewn garments aesthetic, fashionable, soft, comfortable and also adding value to the fi... Washing is considered as the final process of garments finishing. Acid washing is one kind of finishing treatment used for making sewn garments aesthetic, fashionable, soft, comfortable and also adding value to the final garments. This paper investigates the effect of the acid washing (with thermocol balls and potassium permanganate) on different physical properties of three knitted garments (Single Jersey 100% Cotton T-shirt, Single Jersey 95% Cotton 5% Spandex T-Shirt and 1 × 1 Rib100% Cotton T-Shirt). Typical washing procedures and techniques were followed and then physical properties were analyzed under standard condition. It is observed that fabric weight, CPI, WPI, spirality and shrinkage increase while bursting strength, stitch length absorbency decrease after washing treatment. pH of all the samples is under controlled and lies between 7 to 8. There is no change in pilling, colorfastness to wash, water and dry rubbing while a little bit decrease in wet rubbing. 展开更多
关键词 Acid wash Potassium Permanganate thermocol Ball Physical Properties Knitted Garments
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The Effects of Washing Conditions on the Coccidian Oocyst Collection in Chicken Manure
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作者 JIANG Shan 《Animal Husbandry and Feed Science》 CAS 2013年第4期204-205,共2页
To optimize the production process of occidium vaccine and provide the basis and methods for the production of live vaccine,this experiment uses the collected liquid with different centrifugal forces and centrifugatio... To optimize the production process of occidium vaccine and provide the basis and methods for the production of live vaccine,this experiment uses the collected liquid with different centrifugal forces and centrifugation time,to measure and compare the recovery,purity,collection time and costs of coccidian oocyst,for the purpose of exploring the impact of washing conditions on coccidian oocyst collection in chicken manure.The results show that for the centrifugal machine with the radius of 17.2 cm,the best washing centrifugal rotational speed is 2500 rpm /min,that is,the best washing centrifugal force RCF = 1201.85 g,and the centrifugation time is 12 min. 展开更多
关键词 washing conditions Oocysts Recovery Centrifugal force
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The effect of traditional Chinesemedicine washing combined withmassage for neonataljaundice: a meta-analysis
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作者 Li Wang Ting Shuai +1 位作者 Yun-YunWang Hong Cao 《TMR Integrative Nursing》 2017年第2期36-44,共9页
Objective: To systematically assess the effect of traditional Chinese medicine washing (TCM washing) combined withmassage for the treatment of neonatal jaundice.Methods and analysis: Databases, including PubMed, t... Objective: To systematically assess the effect of traditional Chinese medicine washing (TCM washing) combined withmassage for the treatment of neonatal jaundice.Methods and analysis: Databases, including PubMed, the Cochrane Library, Embase, Web of Science, the ChineseBiomedical Literature Database (CBM), CNKI, and Wanfang Data were electronically searched for randomizedcontrolled trials (from inception to July 2017). The methodological qualities of included trials were evaluated by theCochrane risk of bias assessment tool. The meta-analysis was performed by using RevMan 5.3 software.Results: Overall, thirteen trials with a total of 1998 participants were included. The results of meta-analysis indicatedthat TCM washing combined with massage group was significantly superior to the control group in the first meconiumtime (MD, -16.67; 95% CI, -24.59 to -8.74; P〈0.001), time for transformation of meconium (MD, -15.44; 95% CI,-23.59 to -7.28; P〈0.001), transcutaneous bilirubin index changes [after treating three days (MD, -1.99; 95% CI, -2.57 to-1.40; P〈0.001), after treating four days (MD, -1.86; 95% CI, -2.77 to -0.95; P〈0.001), after treating five days (MD,-2.44; 95% CI, -3.47 to -1.42; P〈0.001), after treating six days (MD, -2.23; 95% CI, -3.30 to -1.16; P〈0.001), and thechanges of serum bilirubin levels [after treating five days (MD, -3.17; 95% CI, -5.83 to -0.50; P=0.02), after treating sixdays (MD, -1.63; 95% CI, -3.10 to -0.16; P=0.03), after treating fifteen days (MD,-1.20; 95% CI, -1.99 to -0.41; P=0.003).Conclusions: TCM washing combined with massage may be an effective therapy for the treatment of neonatal jaundice.It can accelerate the excretion of meconium, shorten the time for transformation of meconium, and decreasetranscutaneous bilirubin index and the level of serum bilirubin. But it should be careful to interpreting these findings.Well-designed RCTs are needed to further clarify the conclusion. 展开更多
关键词 Traditional Chinese medicine washing MASSAGE Neonatal jaundice META-ANALYSIS
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Orientational Separation of Sulfur in Petroleum Coke by Alkali Calcining and Reflux Washing
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作者 Su Song Li Minting +3 位作者 Ye Fu Wei Chang Li Xingbin Deng Zhigan 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS CSCD 2023年第4期93-105,共13页
The application of high-sulfur petroleum coke after desulfurization in aluminum electrolysis anodes is an important development trend. However, removing sulfur from high-sulfur petroleum coke is still a significant ch... The application of high-sulfur petroleum coke after desulfurization in aluminum electrolysis anodes is an important development trend. However, removing sulfur from high-sulfur petroleum coke is still a significant challenge.This study proposes alkali calcining and reflux washing to examine the impacts of temperature, particle size, the mass ratio of Na_(2)CO_(3) to NaOH, and total sodium addition on the desulfurization efficiency and mechanism. The results show that the desulfurization rate increases with increasing temperature, increasing total sodium content, and decreasing particle size. The addition of alkali can significantly reduce the opening-ring reaction temperature of thiophene and convert organic sulfur into inorganic sulfur(Na_(2)S). Three washing methods were compared, and reflux washing was selected to separate inorganic sulfur(Na_(2)S) from calcined petroleum coke. The sulfur content in petroleum coke decreased from 7.29% to 1.90%, with a desulfurization rate of 80.13% under optimal conditions. The petroleum coke was analyzed before and after desulfurization using X-Ray diffraction(XRD), Scanning Electron Microscopy(SEM), Infrared Spectroscopy(IR), Thermogravimetric Analysis and Differential Scanning Calorimetry(TG-DSC), Gaschromatography-mass Spectrometry(GC-MS). The results show that thiophene and benzothiophene in petroleum coke are decomposed and converted into octane and ethyl cyclohexane. These new observations are expected to provide further understanding and guidance for the utilization of highsulfur petroleum coke. 展开更多
关键词 petroleum coke alkali calcining reflux washing THIOPHENE
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