21 high pressure processing

Báo cáo khoa học: Adenine, a hairpin ribozyme cofactor – high-pressure and competition studies potx

Báo cáo khoa học: Adenine, a hairpin ribozyme cofactor – high-pressure and competition studies potx
... A and B are essential for catalysis [23] Among them, adenine 38 has been identified as a key residue [2 4–2 8] Structural and mechanistic studies have shown that divalent cations stabilize the hairpin ... was designed to identify inactive hairpin ribozymes whose catalytic activity could be rescued by free exogenous adenine Its entire sequence is 5¢-CCTCCGAAACAGGACTGTCAGGGGG TACCAGGTAATGCATCACAACGTTTTCACGGTTGA ... by an abasic analog [27] It was observed that 2,6-diaminopurine was significantly more efficient than adenine in restoring the catalytic activity In an attempt to obtain additional information about...
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Báo cáo khoa học: High-pressure effects on horse heart metmyoglobin studied by small-angle neutron scattering pdf

Báo cáo khoa học: High-pressure effects on horse heart metmyoglobin studied by small-angle neutron scattering pdf
... incoherent scattering from the hydrogen atoms Bistris was chosen because its ionization constant should not be altered by pressure [35] Sodium azide (NaN3) was added to the aquometmyoglobin solution one ... Polymers and Neutron Scattering, pp 195203 Clarendon Press, Oxford, UK Pin, S., Royer, C.A., Gratton, E., Alpert, B & Weber, G (1990) Subunit interactions in hemoglobin probed by uorescence and high-pressure ... DISCUSSION Previous studies on Mb under high hydrostatic pressures were performed by means of typical spectroscopic techniques that give information on the active site and on the secondary structure...
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Báo cáo Y học: Substrates modulate the rate-determining step for CO binding in cytochrome P450cam (CYP101) A high-pressure stopped-flow study pdf

Báo cáo Y học: Substrates modulate the rate-determining step for CO binding in cytochrome P450cam (CYP101) A high-pressure stopped-flow study pdf
... heme for CO- iron bond formation appears to be ratelimiting In contrast, the CO entry into the protein and the CO migration through the protein to the heme iron favours statistically CO binding for ... that the entry of CO into the protein is the rate-limiting step of CO binding In contrast, a negative activation volume points to the Fe -CO bond formation as the rate-limiting step However, the ... rate constant for the CO binding is linearly related to the CO concentration indicating bimolecular binding kinetics [11,16] To get the kon rate constants the time curves for the absorbance difference...
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Báo cáo Y học: Fluorescence study of the high pressure-induced denaturation of skeletal muscle actin pdf

Báo cáo Y học: Fluorescence study of the high pressure-induced denaturation of skeletal muscle actin pdf
... Pressure-induced denaturation of actin (Eur J Biochem 269) 365 The aim of the present study was to complete a study of F ® G transition and denaturation of actin under pressure Use of a ... that the decrease in the intensity of ¯uorescence in the presence of ATP was not attributable to the denaturation of G -actin Rather these data would represent the rapid exchange between the bound ... to the dissociation of actin and myosin under pressure Then in situ observations were made by monitoring the ¯uorescence of an eADP bound actin HMM (the products of myosin digested by trypsin)...
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Báo cáo Y học: High pressure-induced changes of biological membrane Study on the membrane-bound Na+/K+-ATPase as a model system pdf

Báo cáo Y học: High pressure-induced changes of biological membrane Study on the membrane-bound Na+/K+-ATPase as a model system pdf
... mM NADH, lgámL)1 of pyruvate kinase, and 2.5 lgámL)1 LDH in a total volume of mL The reaction was initiated by an addition of 50 ng of Na+/K+-ATPase Na+-dependent ATPase activity was also measured ... be con®rmed that the Na+/K+-ATPase activity, as determined by the coupled assay system, increased linearly with an increase in the incubation time and enzyme concentration under a pressure of ... explained as a change in the Na+/K+ATPase-lipid bilayer system That is, a high pressure of 100± 220 MPa causes dissociation of a and b subunits, disassembly of transmembrane a helices, and a separation...
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Báo cáo khoa học: Charging of tRNA with non-natural amino acids at high pressure potx

Báo cáo khoa học: Charging of tRNA with non-natural amino acids at high pressure potx
... Aminoacylation of crude tRNA with Lys at high pressure was approximately 2.5 times higher Charging of tRNA with non-natural amino acids compared with the enzymatic reaction, which was due to misacylation ... [14C-aa]tRNAVal, were similar The yield of tRNA charging at high pressure with non-natural amino acids was between 2.5 and 9%, similar to data obtained for aminoacylation with natural amino acids ... Analysis of tRNAPhe and tRNAVal charging with a series of natural amino acids showed that the best yields were obtained for aromatic amino acids, but aminoacylation using amino acids with an aliphatic...
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báo cáo hóa học:" Modified femoral pressuriser generates a longer lasting high pressure during cement pressurisation" pot

báo cáo hóa học:
... generates a longer lasting high pressure during cement pressurisation Journal of Orthopaedic Surgery and Research 2011 6:54 Submit your next manuscript to BioMed Central and take full advantage ... to achieve a more controlled and longer lasting high cementation pressure in femur with a pressuriser that better seals the femoral opening This design modification may enhance cement penetration ... The femoral canal was reamed to fit a Biomet Optima® femoral prosthesis allowing for mm cement mantle A distal plug (Optiplug, Biomet Cementing Technologies AB) was inserted into the canal, to...
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Báo cáo hóa học: " Landmine Detection and Discrimination Using High-Pressure Waterjets" potx

Báo cáo hóa học:
... signal s(t) are not fixed and may vary due to factors such as change in waterjet pressure and variation in the standoff distance from the Landmine Detection and Discrimination Using Waterjets 1977 ... improve and train our algorithms Data was next taken in blind test lanes, where only the approximate position of buried Landmine Detection and Discrimination Using Waterjets 1979 tween 30 and 45 ... calibration data was used to train a WDD “sand + landmine model Likewise, the and clay calibration landmine encounters was used to train a WDD “clay + landmine model Soil-only encounters were...
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Báo cáo khoa học: "Hydraulic conductance of root and shoot measured with the transient and dynamic modes of the high-pressure flowmete" ppsx

Báo cáo khoa học:
... hydraulic conductance of the shoots measured with the transient mode of the HPFM was very close to that measured with the dynamic mode Since shoots were not pressurised before measurement, the good ... conducted with the transient mode until plots were superposed (usually replicates were sufficient) Then the hydraulic conductance of the shoot was measured with the dynamic mode Leaves were then removed ... maximum of 0.5 MPa and was called Almost all values of shoot hydraulic conductance (ksh) obtained with the dynamic mode were equal to those obtained on the same shoot with the transient mode over the...
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Báo cáo khoa học: "Whole shoot hydraulic resistance in Quercus species measured with a new high-pressure flowmeter" pps

Báo cáo khoa học:
... species within the above range The resistances measured in this paper are probably about the same as or less than the resistance encountered by water during normal transpiration The resistance to water ... and Alexander, unpublished data) The leaf-blade resistance includes vascular and nonvascular pathways from the base of the leaves to mesophyll airspaces, but we are of the opinion that the main ... study on leafless shoots of Acer saccharum,≈ 50% the total resistance to water flow in shoots 0.12 m in diameter at the base is contained in branches < 0.02 m basal diameter (Yang and Tyree,...
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MULTI OBJECTIVE OPTIMIZATION ON PRECISION DIE DESIGN OF HIGH PRESSURE DIE CASTING tối ưu hóa đa mục TIÊU TRONG THIẾT kế CHÍNH xác KHUÔN đúc áp lực CAO

MULTI OBJECTIVE OPTIMIZATION ON PRECISION DIE DESIGN OF HIGH PRESSURE DIE CASTING   tối ưu hóa đa mục TIÊU TRONG THIẾT kế CHÍNH xác KHUÔN đúc áp lực CAO
... solidification and optimize aluminum alloy casting process parameters in the condition of production foundry factory Little was published die design in die- casting, gating and die casting parameters ... 90% of defects in die casting components are due to die design errors (F Shehata [10]) Die design is a very difficult work and the company often does not publish because of economic competition ... increase the aluminum die casting quality and efficiency Based on the results from analysis by considering the influence of defects on quality castings, we conducted die design to die- casting with optimal...
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Báo cáo y học: " High blood pressure, antihypertensive medication and lung function in a general adult population"

 Báo cáo y học:
... and antihypertensive medication are highly correlated A detailed analysis of antihypertensive medication indicates that BBL medication and not any other antihypertensive medication is associated ... analysis indicates that BBL medication and not any other antihypertensive treatment is associated with reduced lung function in a general adult population Thus, our findings may serve as a basis ... BBL intake on lung function mainly in patients with already existing pulmonary diseases The association between blood pressure, antihypertensive drug treatment and limited lung function in a population-based...
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Báo cáo y học: " High-intensity non-invasive positive pressure ventilation for stable hypercapnic COPD

 Báo cáo y học:
... with a hematocrit >55% Discussion Stable hypercapnic COPD- patients analysed in the present study performed high-intensity NPPV over several years and thereby demonstrated an improvement in blood ... low IPAP levels, typically ranging between 12 and 16 cmH2O, and the lowest expiratory positive airway pressures (EPAP) levels Subsequently, IPAP is carefully increased, step by step, prior to ... inspiratory positive airway pressure, EPAP = expiratory airway pressure, bf = breathing frequency; SD = standard deviation Table Blood gas levels, lung function parameters, mouth occlusion pressures,...
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Cao huyết áp - High Blood Pressure

Cao huyết áp - High Blood Pressure
... Cao huyết áp (Tăng huyết áp) High Blood Pressure Cách điều trị cao huyết áp? Có số loại thuốc mà người bệnh dùng hàng ngày để kiểm soát tình trạng cao huyết áp Chỉ bác sĩ cho ... không Cao huyết áp ảnh hưởng đến thai phụ? Một vài phụ nữ bị cao huyết áp mang thai Khi thai phụ bị cao huyết áp, tình trạng gọi tiền sản giật nhiễm độc huyết Làm để kiểm soát bệnh cao huyết áp? ... sĩ huyết áp bạn Văn phòng FDA sức khỏe phụ nữ http://www.fda.gov/womens Để biết thêm thông tin: Trung tâm Thông tin Sức khỏe Viện Tim, Phổi & Máu Quốc Gia ĐT: 30 1-5 9 2-8 573 TTY/TDD: 24 0-6 2 9-3 255...
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