نتایج جستجو برای: thm formation

تعداد نتایج: 528209  

Journal: :Forests 2021

Improvements in the yield and solubility of chestnut wood extractives, by using different extraction methods molybdenum catalysts as support, have rarely been reported literature. Many studies focus on parts trees, except for chemical characteristics remaining extractives achieved from thermally modified (THM) (Castanea sativa Mill) wood. This research seeks to better understand effects techniq...

Journal: :Analytical chemistry 2005
Klaas G J Nierop Caroline M Preston Joeri Kaal

A collection of tannins extracted from various plant species was subjected to thermally assisted hydrolysis and methylation (THM) using tetramethylammonium hydroxide. The products obtained included 1,3,5-trimethoxybenzenes, derived from A rings of condensed tannins (CTs), and 1,2-dimethoxybenzene, 1,2,3-trimethoxybenzene, and derivatives as major products from the B ring. 1,2,4-Tri- and two tet...

1969
Richard J. Waldinger Richard C. T. Lee

This paper aescriDes a program, ca l led "PRUW", which w r i t es programs. PROW accepts the s p e c i f i ­ ca t i on of the program in the language of predicate ca l cu lus , decides the a lgor i thm f o r the program and then produces a LISP program which is an im­ plementat ion of the a lgor i thm. Since the construc­ t i o n of the a lgor i thm is obtained by formal theorem-proving techniq...

Journal: :Pattern Recognition Letters 2016
Cunjian Chen Arun Ross

Matching thermal (THM) face images against visible (VIS) face images poses a significant challenge to automated face recognition systems. In this work, we introduce a Heterogeneous Face Recognition (HFR) matching framework, which uses multiple sets of subspaces generated by sampling patches from VIS and THM face images and subjecting them to a sequence of transformations. In the training phase ...

2014
Kadir Özdemır

This study investigates the fractions of natural organic matter (NOM) and trihalomethane (THM) formation after chlorination in samples of raw water and the outputs from ozonation, coagulation-flocculation, and conventional filtration treatment units. All the water samples are passed through various ultrafiltration (UF) membranes. UF membranes with different molecular size ranges based on appare...

2001
Craig Huneke Roger Wiegand ROGER WIEGAND

Let M and N be non-zero finitely generated modules over a local (Noetherian) ring (R,m). Assume that TorRi (M,N) = 0 for i >> 0, and let q = qR(M,N) be the largest integer i for which TorRi (M,N) 6= 0. For the case q = 0, Auslander [A, Theorem 1.2] found a useful formula relating the depths of M , N and R. In view of the Auslander-Buchsbaum formula [BH,Thm. 1.3.3] Auslander’s theorem goes as fo...

Journal: :Anais da Academia Brasileira de Ciencias 2010
Marcelo Sánchez Antonio Gens Sebastia Olivella

The storage of high level radioactive waste is still an unresolved problem of the nuclear industry, being geological disposal the most favoured option and, naturally, the one requiring the strongest geo-mechanical input. Most conceptual designs for the deep geological disposal of nuclear waste envisage placing the canisters containing the waste in horizontal drifts or vertical boreholes. The em...

Journal: :International Journal of Rock Mechanics and Mining Sciences 2021

The coupled Thermo-Hydro-Mechanical (THM) behavior of the Callovo-Oxfordian claystone (COx) is great importance for design and safety calculations high-level radioactive waste disposal project in this potential host rock France. heat emitted by causes a pore pressure increase within surrounding essentially due to differential thermal expansion water solid skeleton. low permeability COx its rela...

Journal: :Water research 2005
Alex T Chow Fengmao Guo Suduan Gao Richard Breuer Randy A Dahlgren

Filters with a pore size of 0.45 microm have been arbitrarily used for isolating dissolved organic carbon (DOC) in natural waters. This operationally defined DOC fraction often contains heterogeneous organic carbon compounds that may lead to inconsistent results when evaluating trihalomethane formation potential (THMFP). A finer pore size filter provides more homogeneous DOC properties and enab...

2016
He Zhao Chengzhi Hu Di Zhang Huijuan Liu Jiuhui Qu Chon-Lin Lee

Coagulation behavior of aluminum chloride and polyaluminum chloride (PACl) for removing corresponding disinfection byproduct (DBP) precursors was discussed in this paper. CHCl3, bromine trihalomethanes (THM-Br), dichloroacetic acid (DCAA) and trichloroacetic acid (TCAA) formation potential yields were correlated with specific ultraviolet absorbance (SUVA) values in different molecular weight (M...

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