10 research outputs found
Effect of feeding spent coffee grounds on the methane production in bovine rumen
The environmental impact of methane, a greenhouse gas emitted from ruminants, is a pressing issue and methods to control methane emissions from ruminants are being investigated worldwide. In this study, we investigated the effects of the administration of spent coffee grounds
(SCG) on methane production in the rumen in two cows. In the control condition (days 1 and 2), the cows were fed a basic diet twice daily (roughage and concentrate), and in the SCG condition (days 1 and 2) sequentially, the cows were fed the same basic diet and administered SCG into the rumen twice daily. The methane and carbon dioxide concentrations in rumen gas were measured via a fistula after feeding on days 2 in both cases of the study. The measurements were made using a newly developed gas measurement system with a portable gas monitor, and data were obtained for the control condition and SCG condition at each measurement time. The methane ratio at each measurement time was calculated from the methane and carbon dioxide concentrations, and compared between the two conditions. Statistical analysis showed no significant difference between the two conditions in the methane ratios after the morning (P=0.108) and afternoon feedings (P=0.345). However, the methane ratios before the morning (P=0.043) and afternoon feedings (P=0.008) were significantly lower in the SCG condition than in the control condition, suggesting that the administration of SCG may suppress methane production in the rumen.journal articl
Improved Search for νμ→νe Oscillation in a Long-Baseline Accelerator Experiment
journal articl
Catálogo Normas Legales Diario Oficial El Peruano, Dic. 1980 - Dic. 1985
Gobierno promulgó la ley del Instituto de Investigaciones de la Amazonía Peruana. Documento que forma parte del “Catálogo de normas legales. Una mirada del Sector Cultura desde el Boletín del Diario El Peruano, Dic. 1980 – Dic. 1985
Quantitative meta-analysis of survival in hyperoncotic albumin compared with control group
Data points are scaled in proportion to meta-analytic weight. CI, 95% confidence interval; RR, relative risk.<p><b>Copyright information:</b></p><p>Taken from "Small-volume resuscitation with hyperoncotic albumin: a systematic review of randomized clinical trials"</p><p>http://ccforum.com/content/12/2/R34</p><p>Critical Care 2008;12(2):R34-R34.</p><p>Published online 4 Mar 2008</p><p>PMCID:PMC2447554.</p><p></p
Structural basis for dynamic mechanism of proton-coupled symport by the peptide transporter POT
Proton-dependent oligopeptide transporters (POTs) are major facilitator superfamily (MFS) proteins that mediate the uptake of peptides and peptide-like molecules, using the inwardly directed H+ gradient across the membrane. The human POT family transporter peptide transporter 1 is present in the brush border membrane of the small intestine and is involved in the uptake of nutrient peptides and drug molecules such as β-lactam antibiotics. Although previous studies have provided insight into the overall structure of the POT family transporters, the question of how transport is coupled to both peptide and H+ binding remains unanswered. Here we report the high-resolution crystal structures of a bacterial POT family transporter, including its complex with a dipeptide analog, alafosfalin. These structures revealed the key mechanistic and functional roles for a conserved glutamate residue (Glu310) in the peptide binding site. Integrated structural, biochemical, and computational analyses suggested a mechanism for H+-coupled peptide symport in which protonated Glu310 first binds the carboxyl group of the peptide substrate. The deprotonation of Glu310 in the inward open state triggers the release of the bound peptide toward the intracellular space and salt bridge formation between Glu310 and Arg43 to induce the state transition to the occluded conformation.journal articl
小型発電機用スターリングエンジンの開発に関する基礎研究 : (第1報, エンジンの設計・試作並びに性能特性)
A small gamma-type Stirling engine was developed as a prime mover of a portable generator set. The engine target performance is 100W output power and 20% net thermal efficiency at 1000 rpm. Special bayonet-type heat exchangers whose inner tubes move inside of the outer tubes, were applied for the engine's heater and cooler. An annular regenerator was located in a displacer piston. The displacer piston had both of the heating and cooling inner tubes for the working gas which flows to and from outer tubes. The outer tubes for heating were located at the top of the expansion cylinder and the outer tubes for cooling were located in the middle of the cylinder. For a piston drive mechanism, a Scotch-yoke mechanism which was useful to realize the small-size engine without any lubricating device, was adopted. In this paper, the design methed using an adiabatic model which can treat several thermal and hydraulic losses, and a nodal model, SETMA, are introduced. The analysis results are compared with the experimental data to show the availability of the arranged design method. Also, the performance of the compact bayonet-type heat exchangers are briefly discussed.rights: 社団法人日本機械学会
rights: 本文データは学協会の許諾に基づきCiNiiから複製したものである
relation: IsVersionOf: http://ci.nii.ac.jp/naid/110002396973/textapplication/pdfjournal articl
Analysis of anions in canine serum using a polyvinyl alcohol (PVA) capillary
<p><b>Copyright information:</b></p><p>Taken from "Causes of metabolic acidosis in canine hemorrhagic shock: role of unmeasured ions"</p><p>http://ccforum.com/content/11/6/R130</p><p>Critical Care 2007;11(6):R130-R130.</p><p>Published online 14 Dec 2007</p><p>PMCID:PMC2246228.</p><p></p> The retention times for some other organic anions not detected in canine blood serum are indicated. The peak at 6.283 minutes remains unidentified. The detection limits were as follows: acetate 1.0 mmol/L, α-ketoglutarate 10.0 μmol/L, citrate 0.1 mmol/L, fumarate 1.0 μmol/L, β-hydroxybutyrate 0.7 mmol/L, and urate 0.1 μmol/L. The conditions were as follows: PVA capillary (60 cm × 50 μm internal diameter); phosphate buffer, pH 7.0; running voltage, 20 kV; 25°C; detection: UV light absorption at 214 nm; sample: canine serum diluted with distilled water (1:100)
