Utilizing properties

Friction drilling is a green hole-making process that zealously utilizes the heat generated from the friction between the rotating conical tool and workpiece to create a bushing without generating chip. The difficult-to-machine materials with unique metallurgical properties have been developed to meet the demands of extreme applications.

8p tohitohi 19-05-2020 10 0   Download

In this article, waste plastics (low-density polyethylene, LDPE) and crumb rubber have been utilized to solve one of the most important environmental issues and to improve bitumen performance properties by these low cost materials.

12p tohitohi 19-05-2020 10 0   Download

Optical coherent transmission links utilize a fourdimensional (4d) signal space. We review the search for good modulation formats in 4d, as well the properties of these formats under the (subset of all possible) 4d rotations that occur during fiber transmission.

3p son248 23-04-2020 44 1   Download

Site-directedmutagenesis was used to investigate the control of 2-oxoacid cosubstrate selectivity by deacetoxycephalo-sporin C synthase. The wild-type enzyme has a requirement for 2-oxoglutarate and cannot efficiently use hydrophobic 2-oxoacids (e.g. 2-oxohexanoic acid, 2-oxo-4-methyl-penta-noic acid) as the cosubstrate. The followingmutant enzymes were produced: R258A, R258L, R258F, R258H and R258K. All of the mutants have broadened cosubstrate selectivity and were able to utilize hydrophobic 2-oxoacids.

7p tumor12 20-04-2013 42 3   Download

Human heat shock protein of apparent molecular mass 20 kDa (Hsp20) and its mutant, S16D, mimicking phos-phorylation by cyclic nucleotide-dependent protein kinases, were cloned and expressed inEscherichia coli. The proteins were obtained in a homogeneous state without utilization of urea or detergents. On size exclusion chromatography at neutral pH, Hsp20 and its S16D mutant were eluted as symmetrical peaks with an apparent molecular mass of 55–60 kDa.

12p dell39 03-04-2013 46 3   Download

The heterologous expression of tryptophan trytophylquinone (TTQ)-dependent aromatic amine dehydrogenase (AADH) has been achieved in Paracoccus denitrificans. The aauBEDAgenes andorf-2from the aromatic amine utilization (aau) gene cluster of Alcaligenes faecaliswere placed under the regulatory control of themauFpromoter fromP. denitrificans and introduced intoP. denitrificansusing a broad-host-range vector.

16p dell39 27-03-2013 42 4   Download

Current theories agree that there appears to be no unique feature responsi-ble for the remarkable heat stability properties of hyperthermostable pro-teins. A concerted action of structural, dynamic and other physicochemical attributes are utilized to ensure the delicate balance between stability and functionality of proteins at high temperatures.

13p media19 04-03-2013 30 2   Download

The aim of the study was to investigate the crystallization kinetics and solidification behaviour of Fe60Co8Mo5Zr10W2B15 bulk glass forming alloy. The solidification behaviour in near-equilibrium and non-equilibrium cooling conditions was studied. The eutectic and peritectic reactions were found to exist in the solidification sequence of the alloy. The bulk metallic glass formation was achieved by using two methods: quenching from the liquid state and quenching from the semi-state.

140p dontetvui 21-01-2013 82 12   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài:A systematic review of the psychometric properties of self-report research utilization measures used in healthcare

18p toshiba22 22-11-2011 61 4   Download

Bằng cách sử dụng tiết cho bảng và cột bảng và cột, giống như các đối tượng khác trong cơ sở dữ liệu của bạn, có đặc tính cho phép bạn kiểm soát các dữ liệu có nghĩa là sẽ thành bàn của bạn.

2p luvpro 06-08-2010 51 2   Download