scholarly journals Relationship between fiber diameter and performance of yak wool

2021 ◽  
Vol 33 (2) ◽  
pp. 20-24
Author(s):  
Baigalmaa Danzan ◽  
Sereeterdorj Dugerragchaa ◽  
Naransolongo Ukhnaa ◽  
Khishigjargal Tsedev
Keyword(s):  
Thermal Conductivity ◽  
Contact Angle ◽  
Evaluation Method ◽  
Fiber Diameter ◽  
Thermal Sensitivity ◽  
Mean Value ◽  
The Mean ◽  
The Difference ◽  
High Level ◽  
Correlation Level

This article demonstrates the thermal sensitivity and conductivity as well as the water permeability and absorptivity of Mongolian yak wool surfaces according to the Kawabata evaluation method. According to the results of the study, the mean value of thermal sensitivity (Qmax) of yak wool surface is 0.051 w/cm2 for down and 0.061 w/cm2 for coarse hair while the mean value of thermal conductivity is 2.08x10-4 (cal/cm ·0C) for down and 2.63x10-4(cal/cm · 0C) for coarse hair. This study, with its high level of confidence (p = 0.05), proves the difference between down and coarse hair. Additionally, the study shows a strong correlation between the thermal conductivity and the fiber diameter of Mongolian yak wool, resulting in a correlation level of r = -0.80 for down and r = 0.86 for coarse hair.   When measuring the wettability of Mongolian yak wool, yak wool surface exhibited waterproof properties with a contact angle of 146.50 degrees for down hair and a contact angle of 147.10 degrees for coarse hair. The study also revealed a low correlation level of r = 0.39 for down and r = 0.40 for coarse hair when examining the relationship between the contact angle and the diameter of yak wool.

Seasonal trends in the stable isotopic composition of snow and meltwater runoff in a subarctic catchment at Okstindan, Norway

2004 ◽  
Vol 35 (2) ◽  
pp. 119-137 ◽  
Author(s):  
S.D. Gurney ◽  
D.S.L. Lawrence
Keyword(s):  
Isotopic Composition ◽  
Mean Value ◽  
Mean Values ◽  
Stable Isotopic Composition ◽  
Meltwater Runoff ◽  
Stable Isotopic ◽  
The Mean ◽  
The Difference ◽  
Δ18o And Δd

Seasonal variations in the stable isotopic composition of snow and meltwater were investigated in a sub-arctic, mountainous, but non-glacial, catchment at Okstindan in northern Norway based on analyses of δ18O and δD. Samples were collected during four field periods (August 1998; April 1999; June 1999 and August 1999) at three sites lying on an altitudinal transect (740–970 m a.s.l.). Snowpack data display an increase in the mean values of δ18O (increasing from a mean value of −13.51 to −11.49‰ between April and August), as well as a decrease in variability through the melt period. Comparison with a regional meteoric water line indicates that the slope of the δ18O–δD line for the snowpacks decreases over the same period, dropping from 7.49 to approximately 6.2.This change points to the role of evaporation in snowpack ablation and is confirmed by the vertical profile of deuterium excess. Snowpack seepage data, although limited, also suggest reduced values of δD, as might be associated with local evaporation during meltwater generation. In general, meltwaters were depleted in δ18O relative to the source snowpack at the peak of the melt (June), but later in the year (August) the difference between the two was not statistically significant. The diurnal pattern of isotopic composition indicates that the most depleted meltwaters coincide with the peak in temperature and, hence, meltwater production.

scholarly journals AB0189 LIPOPROTEIN ABNORMALITIES IN RHEUMATOID ARTHRITIS PATIENTS

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 1119.1-1119
Author(s):  
L. Nacef ◽  
Y. Besbes ◽  
Y. Mabrouk ◽  
H. Ferjani ◽  
K. Maatallah ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Demographic Data ◽  
Calcium Score ◽  
Healthy Person ◽  
Mean Value ◽  
Immunological Parameters ◽  
American College Of Rheumatology ◽  
Patient Consent ◽  
The Mean ◽  
High Level

Background:The lipid paradox is termed the decreased cholesterol level in rheumatoid arthritis (RA). Nevertheless, the apolipoprotein levels are usually higher than a healthy person and are predictors of cardiovascular events.Objectives:We aimed to describe lipid abnormalities in RA patients and to look for predictor factors of these changes.Methods:The prospective study was carried out on patients with RA who met the 2010 American College of Rheumatology (ACR)/European League Against Rheumatism (EULAR) classification criteria. These patients were followed in the rheumatology department of the Kassab Institute.We collected the socio-demographic data, biological and immunological parameters.The lipid assessment included: a measurement of total cholesterol (TC), HDL, LDL, and triglycerides (TG). Lipoproteins APOA1 and APOB were measured. All data were collected after patient consent.Results:Of the 47 patients recruited, 78.7% were female. The mean age was 52.5 ±11.06 [32-76]. The average RA progressed from 86.25 ±63 months [5-288] and was erosive in 81.6% of cases. The rheumatoid factor (RF) was positive in 57.8% of patients, and citrullinated antipeptide antibodies (ACPA) were present in 62.2%. Eight patients had a previous CV history.Mean TC was 4.42 ±1.3 [1.2-7.58], mean HDL was 1.38 ±0.73 [0.18-4.10], mean LDL was 2.55 ±1.16 [0.24-5.54]. The mean TG value was 1.28 ±0.6 [0.24-5.54]. TC elevation was found in 9.1% of cases, HDL in 21.3% of cases, LDL in 5.5% of cases, and TG in 16.4% of cases. Mean APOB/APOA1 ratio was 0.67 ±0.18 [0,46-1,11]. LDL elevation was associated to a high DAS28 (p=0.06, r=0.512). APOA1 was associated to a low DAS28 (p=0.04, r=-0.642).The mean value of APO A1 was 1.36 ±0.21 [0.84-1.81], that of APOB was 0.90 ±0.22 [0.58-1.40]. APOA1 values were lower in patients with high-level LDL (p=0.767). The APOB value was associated with lipid disturbance without significant correlation (p=0.291).Conclusion:Lipid test abnormalities can be found in RA patients outside of any known CV risk factors. APOA1 seems to have a protective effect. Screening and treatment of these abnormalities can prevent CV risk.References:[1]Miguel Bernardes and al. Coronary artery calcium score in female rheumatoid arthritis patients: Associations with apolipoproteins and disease biomarkers. Int J Rheum Dis. 2019;00:1–16.[2]Anna So dergren and al. Biomarkers associated with cardiovascular disease in patients with early rheumatoid arthritis. PLOS ONE. August 5, 2019.Disclosure of Interests:None declared

Stochastic Analysis of Temperature Distribution in a Solid With Random Heat Conductivity

1988 ◽  
Vol 110 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Da Yu Tzou
Keyword(s):  
Thermal Conductivity ◽  
Temperature Distribution ◽  
Heat Conductivity ◽  
Stochastic Analysis ◽  
Solid Medium ◽  
Mean Value ◽  
Random Response ◽  
Thermal Failure ◽  
Numerical Examples ◽  
The Mean

Stochastic temperature distribution in a solid medium with random heat conductivity is investigated by the method of perturbation. The intrinsic randomness of the thermal conductivity k(x) is considered to be a distribution function with random amplitude in the solid, and several typical stochastic processes are considered in the numerical examples. The formulation used in the present analysis describes a situation that the statistical orders of the random response of the system are the same as those of the intrinsic random excitations, which is characteristic for the problem with extrinsic randomness. The maximum standard deviation of the temperature distribution from the mean value in the solid medium reveals the amount of unexpected energy experienced by the solid continuum, which should be carefully inspected in the thermal-failure design of structures with intrinsic randomness.

scholarly journals Lateral Antebrachial Cutaneous Nerve as a Donor Source for Digital Nerve Grafting: A Concept Revisited

2017 ◽  
Vol 11 (1) ◽  
pp. 1041-1048 ◽  
Author(s):  
Mehmet Bekir Unal ◽  
Kemal Gokkus ◽  
Evrim Sirin ◽  
Eren Cansü
Keyword(s):  
Pearson Correlation ◽  
Mean Value ◽  
Cutaneous Nerve ◽  
Digital Nerve ◽  
Mean Values ◽  
Nerve Grafts ◽  
The Mean ◽  
The Difference ◽  
Mean Time

Objective: The main objective of this study is to evaluate the availability of lateral antebrachial cutaneous nerve (LACN) autograft for acute or delayed repair of segmented digital nerve injuries. Patients and Methods: 13 digital nerve defects of 11 patients; treated with interposition of LACN graft that harvested from ipsilateral extremity were included in the study. Mean follow up period was 35, 7 months. The mean time from injury to grafting is 53, 3 days. The results of the mean 2PDT and SWMT values of injured /uninjured finger at the end of follow up period were evaluated with Paired T test. The correlation between the defect length and the difference of 2PDT, SWMT values between the uninjured and injured finger at the end of follow up period; were evaluated with Pearson - correlation analysis. Results: The mean value of our 2PDT and SWMT results are ~5,923, ~3, 52, respectively in which can be interpreted between the normal and diminished light touch. The defect length and difference percentage of SWMT values is positively and significantly correlated statistically. Mean length of interposed nerve grafts was 18.5 mm. The age of the patient and the mean values of 2PDT and SWMT with the difference % of 2PDT and % of SWMT are not statistically correlated. Conclusion: Based on results regarding sensory regaining at recipient side and negligible sensory deficit at harvesting side, we suggest that lateral antebrachial cutaneous nerve might be a valuable graft option for digital nerve defects.

scholarly journals True and Pseudo Cholinesterase levels in short and long-term of pesticides exposures

2020 ◽  
pp. 9-12
Author(s):  
Mohammed Abdul Rahman ◽  
Raghunatha Rao D ◽  
Vasantha L
Keyword(s):  
Whole Blood ◽  
Acute Poisoning ◽  
Mean Value ◽  
Serum Cholinesterase ◽  
Control Group ◽  
Study Group ◽  
Chronic Poisoning ◽  
The Mean ◽  
The Difference ◽  
And Control

The present study is aimed to study and analyze the true and pseudo Cholinesterase levels in the subjects exposed to pesticides during short term by intentional or accidental intake and long term exposure due to their occupation were studied at Department of Biochemistry, SVS medical college and hospital mahbubnagar district. Whole blood cholinesterase levels and Pseudo cholinesterase levels were estimated. 150 people were taken as controls who had no medical illness and a total number of 300 cases of pesticide poisoning were selected, aged between 20 to 55 years, which consist of 150 acute poisoning and 150 chronic poisoning subjects in Mahbubnagar district, were taken as case study, the detailed case history and the type of organophosphorus pesticide taken were recorded. Mean and standard deviation (S.D) of all variables were calculated and compared with those of controls. Statistical significance was assessed and P-value <0.05 were considered significant.           During acute poisoning the mean value of Whole blood cholinesterase/True cholinesterase (U / L) in acute poisoning cases on first day was 1.267± 0.612 on 3th day was 1.651±0.647, on 7th day was 2.221±0.684 and at the end of 6 months was 3.970±0.404.The difference between the study group and control group (4.0 ± 0.39) was found to be statistically significant in1st, 3rd, 7th day but not significant at the end of 6 months. The mean value of serum cholinesterase/pseudo cholinesterase (U/L) in acute poisoning cases on first day was 2213.05 ± 1749.81, on 3th day was 2862.3 ± 2025.6, on 7th day was 4008.4 ± 2355.9 and at the end of 6 months was 7708.34 ± 880.72.The difference between the study group and control group (7991.97 ± 1276.5) was found to be statistically significant in1st, 3rd, 7th day but not significant at the end of 6 months. During chronic poisoning (exposure) the mean value of Whole blood cholinesterase (U/L) in controls is 4.0 ± 0.39 as compared to 3.019 ± 0.848 in cases of chronic poisoning. The difference between the study group and control group was found to be statistically significant. The mean value of serum cholinesterase/pseudo cholinesterase (U/L) in controls was 7991.97 ± 1276.5 as compared to 6214 ± 1189 in cases of chronic poisoning. The difference between the study group and control group was found to be statistically significant.

Literature Review : Burnout pada Perawat Selama Pandemi COVID-19

2021 ◽  
Vol 1 ◽  
pp. 1300-1305
Author(s):  
Arti Ayuningtiyas ◽  
Benny Arief Sulistyanto
Keyword(s):  
Literature Review ◽  
Emotional Exhaustion ◽  
Mean Value ◽  
Moderate Level ◽  
Personal Accomplishment ◽  
Google Scholar ◽  
Inclusion Criteria ◽  
Nurse Burnout ◽  
The Mean ◽  
High Level

AbstractDuring the Covid-19 pandemic, nurses are at the forefront. Many nurses experience stress and fatigue due to increased workload. Stress and fatigue that is obtained at work, both physical and psychological fatigue, is known as Burnout. This study aimed to describe the incidence of Burnout experienced by nurses during the Covid 19 Pandemic. This research is a literature review. This study was looking for some articles from PubMed,Garuda, and Google Scholar, with keyword. There were 5 articles that matched the research inclusion criteria. Critical analysis of 5 articles used the JBI instrument. These articles used the mean calculation. In the Emotional Exhaustion category, the mean value was 22.75 and SD was 8.828. it meant that the burnout level in the Emotional Exhaustion category was at a moderate level. In the depersonalization category, the mean value was 7.54 with SD 4.248. it meant that the burnout level in the depersonalization category was at a moderate level. In the personal accomplishment category, the mean was 19.676 with SD of 6.7. it mean that the burnout level in this category was a high level. The nurses experience burnout during the Covid-19 pandemic. The Emotional exhaustion category is a moderate level, depersonalization is at a moderate level, and personal accomplishment is at a high level.Keywords: Nurse, Burnout, Covid-19 pandemic AbstrakDimasa pandemi Covid-19 perawat berada pada garda terdepan, banyak perawat mengalami stress dan kelelahan dikarenakan beban kerja meningkat. Stress dan Kelelahan yang didapat saat kerja baik itu kelelahan fisik maupun psikis dikenal dengan nama Burnout penelitian ini bertujuan untuk mendeskripsikan kejadian Burnout yang dialami Perawat selama Pandemi Covid 19. Penelitian ini adalah literatur review. Hasil pencarian artikel dari database online yaitu Pubmed,Garuda dan Google Scholar, dengan kata kunci di dapatkan 5 artikel yang sesuai dengan kriteria inklusi penelitian. Analisa telaah kritis terhadap 5 artikel menggunakan instrument JBI. Terdapat 5 Artikel yang menggunakan perhitungan mean di dapatkan hasil kategori Emotional Exhaustion nilai mean sebanyak 22.75 dan SD 8.828 dimana hasil menunjukkan level burnout pada level sedang. Kategori depersonalization dengan nilai mean 7.54 dengan SD 4.248 dimana hasil burnout pada level sedang. Kategori personal accomplishment hasil mean 19.676 dengan SD 6.7 dimana hasil burnout menunjukkan level tinggi. Dari 5 Artikel yang di telaah di dapatkan Perawat mengalami Burnout selama pandemic Covid-19, kategori Emotional Exhaustion berada pada level sedang, depersonalization berada pada level sedang, dan personal accomplishment pada level tinggi.Kata Kunci : Perawat, Burnout, pandemi Covid-19

scholarly journals Coupling and Coordination Degrees of the Core Water–Energy–Food Nexus in China

2019 ◽  
Vol 16 (9) ◽  
pp. 1648 ◽  
Author(s):  
Shasha Xu ◽  
Weijun He ◽  
Juqin Shen ◽  
Dagmawi Mulugeta Degefu ◽  
Liang Yuan ◽  
...  
Keyword(s):  
Complex System ◽  
Sustainable Development ◽  
Mean Value ◽  
Key Factors ◽  
The Core ◽  
The Mean ◽  
Development Levels ◽  
High Level ◽  
Coordination Development ◽  
Coordination Degree

Achieving sustainable development in the water–energy–food (WEF) nexus is gaining global attention. The coupling and coordination degrees are a way to measure sustainable development levels of a complex system. This study assessed the coupling and coordination degrees of the core WEF nexus and identified key factors that affect sustainable development. First, an index system for assessing coupling and coordination degrees of the core WEF nexus was built. Second, the development levels of three subsystems as well as the coupling and coordination degrees of the core WEF nexus in China were calculated. The results showed that from 2007 to 2016, the mean value of the coupling degree was 0.746 (range (0.01, 1)), which was a high level. This proved that the three resources were interdependent. Hence, it was necessary to study their relationship. However, the mean value of the coordination degree was 0.395 (range (0, 1)), which was a low level. This showed that the coordination development of the core WEF nexus in China was low. It is necessary to take some measures to improve the situation. According to the key factors that affect the development levels of water, energy, and food subsystems, the authors put forward some suggestions to improve the coordination development of the WEF system in China.

The influence of selection and plane of nutrition on the components of fleece weight in Merino sheep

1958 ◽  
Vol 9 (6) ◽  
pp. 802 ◽  
Author(s):  
RB Dun
Keyword(s):  
Fibre Diameter ◽  
Fibre Length ◽  
Small Contribution ◽  
Cross Sectional ◽  
Single Character ◽  
The Mean ◽  
Low Levels ◽  
The Difference ◽  
Fleece Weight ◽  
High Level

The components of clean fleece weight were examined in five experimental flocks of medium-wool Peppin Merinos. Four single-character selection groups – clean fleece weight plus, clean fleece weight minus, crimps per inch plus, and crimps per inch minus – were examined by measuring fleece production in 18-month-old ewe progeny. Measurements were also made on progeny from the "nucleus" flock, which was selected for clean fleece weight with subsidiary selection for crimps per inch and against fold score. Data were collected in 1952 and 1954. The 1954 figures were obtained from a nutrition experiment in which sheep mere grown from weaning to 18 months on a high and on a low plane of nutrition. The mean measurements of the components of clean fleece weight (W) were compared between flocks using the "percentage deviation" technique. Four comparisons were made: (1) Nucleus/Fleece minus; (2) Fleece plus/Fleece minus; (3) Crimps minus/Crimps plus; (4) high nutritional plane/low nutritional plane. In comparisons (1) , (2), and (3), difference in weight of wool per unit area of skin (w) accounted for nearly all the difference in W. Body weight (S) made a small contribution while difference in fold score (R) was negligible. Fibre density (N) accounted for +86 per cent., and fibre cross-sectional area (A) for –28 per cent., of the difference in W in comparison (1). In comparison (2) the figures were N +47 per cent., A +21 per cent., while the figures for comparison (3) were N –26 per cent., A +121 per cent. The increase in fleece weight was invariably accompanied by a decrease in crimps per inch. In all three comparisons primary density (P) was the major cause of change in N. Fibre length (L) made a uniform contribution of approximately +15 per cent. in the three comparisons.The relative importance of the components of fleece weight was similar at both high and low levels of nutrition.The effect of a high level of nutrition was to produce large increases in A, L, and S. The increase in S was compensated by an equal decrease in P. The increase in fibre diameter was not associated with any change in crimps per inch.

scholarly journals III. On the uneliminated instrumental error in the observations of magnetic dip

1869 ◽  
Vol 17 ◽  
pp. 427-429
Keyword(s):  
Mean Value ◽  
Usual Method ◽  
Centre Of Gravity ◽  
Single Reading ◽  
The Mean ◽  
The Difference ◽  
The One ◽  
Number Of Passes ◽  
Source Of Error ◽  
Complete Observation

A single reading of one end of a dipping-needle placed in a dip-circle provided with microscopes for observing is liable to a variety of instrumental errors, which are eliminated by taking the mean of the sixteen readings of the two ends in the eight different positions included in a complete observation. Nevertheless it is found that with the best modern instruments a mean value results from these sixteen observations different for each different needle, and that the difference between the results obtained with two different needles is not the same at all times. The irregularities in the values of the dip observed at Bombay with two needles of excellent character made by Barrow of London, led the author to investigate the effect of a hypothetical irregularity in the shape of the axle of the needle, such that a section of the axle by a plane perpendicular to its axis would be elliptical instead of circular in form. Another source of error, which was brought to the notice of the Royal Society many years ago in a paper published in the Proceedings, is the displacement of the centre of gravity of the needle from the centre of the axle, combined with inequality in the magnetization of the needle when the poles are direct and reversed. Experience has led the author to the conclusion that the usual method of magnetization, by a definite number of passes of the same pair of bar-magnets, communicates magnetism to the needle very unequally when the one end of the needle is made north and when the other end is made north. Consequently it is advisable to investigate the effects of ellipticity of the axle and of displacement of the centre of gravity at the same time, which the author proceeds to do.

Effect of Erythropoietin on Platelet Function and Glycoprotein Expression in Patients with MDS.

Blood ◽  
2005 ◽  
Vol 106 (11) ◽  
pp. 3993-3993
Author(s):  
Fotis F.I. Girtovitis ◽  
Dimitrios D. Bougiouklis ◽  
Michel M.P. Makris ◽  
Elefteria E. Pithara ◽  
Pantelis P.E. Makris
Keyword(s):  
Flow Cytometry ◽  
Platelet Function ◽  
Normal Subjects ◽  
Mean Value ◽  
Special Treatment ◽  
Recombinant Erythropoietin ◽  
Mean Values ◽  
Human Recombinant Erythropoietin ◽  
The Mean ◽  
The Difference

Abstract Aim: We decide to study the effect of erythropoietin on the platelet function and glycoproteins expression in patients (pts) with myelodysplastic syndrome (MDS). All patients suffered from primary MDS but none of them received any special treatment. From our study pts that suffered from diseases or they were receiving medication that affect the function of platelets were excluded. Furthermore pts with platelet count&lt;50,000/μl were excluded also because we were unable to check the aggregation of platelets. Material: 41 subjects were studied, 15 normal subject (10 men and 5 women mean age 66,6±14 years old)and 26 pts (17 men and 9 women with mean age70,9±7,4 years old) suffered from all types of MDS according to FAB criteria (9 with RA, 3 with RARS, 7 RAEB, 4 with CMML and 3 with RAEB-t). We divided them in 2 groups: 1st - 7 Pts receiving human recombinant erythropoietin (rEPO) with mean dose 30.000 iu subcutaneous weekly and 2nd - 19 without rEPO. Methods. 1- The platelet function was studied in Platelet Ionized Calcium Aggregometer (PICA) using Ristocetin, ADP, Collagen and Adrenalin as stimulators. 2- The expression of platelet glycoproteins (GPIb, IX, IIb, IIIa and P-selectin) was studied using the flow cytometry and special monoclonal antibodies. This way the percentage of glycoprotein expressed in platelet membrane and MFI were estimated. We performed the statistical analysis of our results using the t-test with common standard deviation.. Results: our results concerning the aggregation test and flow cytometry are presented in tables 1,2 and 3. From the study of our results we can see that while the decrease of aggregation between the patients under EPO and normal subjects is statistically non significant (p&lt;0.1)the decrease of the corresponding values between the pts that did not received EPO and normal subjects was statistically very significant for all stimulators (p &lt;0,001). pts under EPO show an important increase of platelet expressing GPIIb percentage grater than the expressed percentage of patients without EPO (60% vs. 46,1% correspondingly, p&lt;0.001). The difference of expressed MFI was not statistically significant. Conclusion: The findings of our study show us that erythropoietin improves the function of platelets in patients with MDS, probably through the increase of platelet percentage which express glycoproteins. Table 1 Comparison of the mean value of aggregation between the groups Table 2 Comparison of the mean values of the platelets expressing corresponding glycoproteins percentage between the groups Table 3 Comparison of the mean value of MFI between the groups

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