scholarly journals Effect of pre-treatment procedure on micropore system characteristics of subbituminous coal

Author(s):  
T. Zelenka
2002 ◽  
Vol 22 (6) ◽  
pp. 611-616 ◽  
Author(s):  
Nevim Genç ◽  
Şems Yonsel ◽  
Levent Dağaşan ◽  
A.Nur Onar

2020 ◽  
Vol 12 (20) ◽  
pp. 2560-2570 ◽  
Author(s):  
Qingxue Gao ◽  
Yongjia Chang ◽  
Qingmei Deng ◽  
Hui You

Blood plasma separation is a vital sample pre-treatment procedure for microfluidic devices in blood diagnostics, and it requires reliability and speediness.


1978 ◽  
Vol 133 (6) ◽  
pp. 514-519 ◽  
Author(s):  
J. Lambourn ◽  
D. Gill

SummaryTwo groups of 16 patients with depressive psychosis took part in a controlled evaluation of electro-convulsive therapy (ECT). One group received six brief pulse unilateral shocks under conventional anaesthesia and muscle relaxation; the second group underwent the same procedure without receiving shocks. Outcome was assessed by a separate investigator using the Hamilton Rating Scale for Depression under double-blind conditions. The results showed that this form of ECT was only superior to the control treatment for one item in the scale, a finding which could have occurred by chance. The results suggest that the ECT pre-treatment procedure has an important therapeutic effect. This casts some doubt on current views of the effectiveness of electro-convulsive therapy in general, and of brief pulse unilateral ECT in particular.


2021 ◽  
Vol 7 ◽  
Author(s):  
Zhi Ge ◽  
Jin Qin ◽  
Renjuan Sun ◽  
Yanhua Guan ◽  
Hongzhi Zhang ◽  
...  

The aim of the current study is to investigate the properties of graphene nanoplatelets-cementitious composites in a consistent sense. The influence of the addition of 2D graphene nanoplatelets (GNPs) on the workability, setting time, flowability, strengths and piezoresistive properties were studied. The dosage of the GNPs is 0 0.05, 0.1, 0.3, 0.5, 0.7, and 1.0 wt% of the binder material. PVP type surfactant was used to disperse GNPs. The experimental results showed that the addition of GNPs increases the water requirement for normal consistency and decreases the flowability. A small amount of GNPs (0.05 wt%) can facilitate the setting. When the dosage of GNPs is above 0.1 wt%, it leads to the delay of the setting time. In terms of the strengths, the addition of GNPs can considerably promote the flexural strength, while the compressive strength is slightly decreased until 28 days. A pre-treatment procedure consisting of drying specimens at 105°C for 1 day can be regarded as a proper way to enhance the piezoresistive properties of the GNPs-mortar. Piezoresistive properties under two different cyclical loading schemes were measured using the GNPs-mortar with 1 wt% GNPs. It has been shown that the average resistance change rate increases with the amplitude increasing and a reduction is observed for the sustained cyclical loading condition. In the end, the influence of the microcracks on the piezoresistive properties was investigated. This study will contribute to future developments of cementitious composites incorporating GNPs for a variety of applications.


2007 ◽  
Vol 598 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Jorge Moreda-Piñeiro ◽  
Elia Alonso-Rodríguez ◽  
Purificación López-Mahía ◽  
Soledad Muniategui-Lorenzo ◽  
Darío Prada-Rodríguez ◽  
...  

2011 ◽  
Vol 24 (15) ◽  
pp. 1703-1709 ◽  
Author(s):  
Mojtaba Saba ◽  
Ali MohammadYousefi ◽  
Fereshteh Rashchi ◽  
Javad Moghaddam

2011 ◽  
Vol 287-290 ◽  
pp. 1464-1468
Author(s):  
Jai Houng Leu

For self-manufacture of biodiesel, the purchase cost of the feedstock is around the 70% manufacture cost, so, three kinds of the feedstock were tested & analyzed in this paper for decreasing the feedstock purchase cost for the fully developed technique of the transerification reaction with homogeneous/heterogeneous process. The other hand, the pre-treatment procedure for modulation of both acid number and iodine number is the important step for biodiesel manufacture with the feedstock of waste cooking oil (including extracted fat from cooking residue). And, the relating techniques are also developed actively in Taiwan.


1973 ◽  
Vol 122 (569) ◽  
pp. 457-460 ◽  
Author(s):  
Richard Abrams ◽  
Max Fink ◽  
Stanley Feldstein

Because of the empirical nature of the treatment procedure, many investigators have sought predictors of clinical response to ECT (Abrams, 1972). Three studies (Hobson, 1953; Carney et al., 1965; and Mendels, 1967) provide well-defined methods for calculating an index for prediction of response to ECT. Each assigns individual weights to specific features of the clinical state and the history of the illness, as determined during a pre-treatment interview. The predictive accuracy reported for these indices ranges from 79–87 per cent. Three attempts have been made to replicate Hobson's (1953) results—two were successful (Roberts, 1959; and Mendels, 1965), and one was not (Hamilton and White, 1960). We have found no reports attempting to test the prognostic accuracy of the indices of Carney et al. (1965) or Mendels (1967).


2016 ◽  
Vol 155 (1) ◽  
pp. 184-190 ◽  
Author(s):  
M. GHORBANI ◽  
F. AHMADI ◽  
A. RAJAEE RAD ◽  
M. J. ZAMIRI ◽  
J. W. CONE ◽  
...  

SUMMARYExperiments were conducted to determine the effect of lime pre-treatment on the chemical composition and in vitro rumen degradability of date palm leaves (DPL). Lime pre-treatments, with or without oxygen supply, were applied for 1, 2 and 3 weeks at 25 and 40 °C. Lime was neutralized by the Calcium-Capturing-by-Carbonation process. Delignification and in vitro rumen gas production were significantly influenced by duration, temperature and oxygen. At 40 °C, oxygen presence stimulated more delignification and subsequently increased in vitro rumen degradability. Lime pre-treatment with 0·2 g calcium hydroxide (Ca(OH)2)/g dry biomass for 3 weeks at 40 °C in the presence of oxygen resulted in a 3-fold increase in gas production after 24 h of incubation, compared with untreated biomass. Lime treatment of DPL with aeration resulted in higher lignin removal and subsequent rumen degradability than without aeration. A techno-economic analysis is needed to select the most efficient and economically feasible pre-treatment procedure.


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