1. BARTLEY, WV. and DAVIEs, R. E. Active transport of ions by subcellular particles. Biochem. Jour. 57: 37-49. 1954. 2. BULEN, W. A., VARNER, J. E. and BURRELL, R. C. Separation of organic acids from plant tissues. Anal. Chem. 24: 187-190. 1952. 3. GRAHAM, J. S. D. and YOUNG, L. C. T. Fixation of carbon dioxide in particulate preparations from barley roots. Plant Physiol. 34: 520-526. 1959. 4. ...

1. BARTLEY, WV. and DAVIEs, R. E. Active transport of ions by subcellular particles. Biochem. Jour. 57: 37-49. 1954. 2. BULEN, W. A., VARNER, J. E. and BURRELL, R. C. Separation of organic acids from plant tissues. Anal. Chem. 24: 187-190. 1952. 3. GRAHAM, J. S. D. and YOUNG, L. C. T. Fixation of carbon dioxide in particulate preparations from barley roots. Plant Physiol. 34: 520-526. 1959. 4. ...

bone-patellar tendon auto graft is probably the most widely used graft for acl reconstruction. several methods for graft fixation have been described. to avoid intra-articular hardware we adopt biological fixation with a femoral trapezoidal press-fit fixation. a prospective study was performed on 30 consecutive active people who underwent acl reconstruction with this technique by two surgeons b...

Observations of the tropical nitrogen (N) cycle over the past half century indicate that intact tropical forests tend to accumulate and recycle large quantities of N relative to temperate forests, as evidenced by plant and soil N to phosphorus (P) ratios, by P limitation of plant growth in some tropical forests, by an abundance of N-fixing plants, and by sustained export of bioavailable N at th...

a new biological active hexapeptide of c-terminal of nocistatin, contains glu-gln-lys-gln-leu-gln sequence was synthesized according to solid phase peptide synthesis on the surface of 2-chloro tritylchloride resin and using fmoc-protected amino acids in the presence of tbtu (o-(benzotriazol-1-yl)-n,n,n',n'-tetramethyl uranium tetrafluoroborate) as a coupling reagent. then, amidation o...

There are more than 750 counties in 13 provinces and autonomous regionsconstituting 30% of China lands which are facing serious problem of desertification. Theseareas are mainly distributed in arid, semi-arid and dry sub-humid areas in the western part ofNortheast China, North central china and most of northwest china. Biological methods are theultimate way for drift sand stabilization and a fu...

Nitrogen fixation (C(2)H(2) reduction) by algae in flooded soil was limited by interactions within the algal community. Nitrogen fixation by either indigenous algae or Tolypothrix tenuis was reduced severalfold by a dense suspension of the green alga Nephrocytium sp. Similarly, interactions between the nitrogen-fixing alga (cyanobacterium) Aulosira 68 and natural densities of indigenous algae l...

Although the biological fixation of CO2 by chemolithoautotrophs provides a diverse suite of organic compounds utilized by chemoorganoheterotrophs as a carbon and energy source, the relative amounts of autotrophic C in chemotrophic microbial communities are not well-established. The extent and mechanisms of CO2 fixation were evaluated across a comprehensive set of high-temperature, chemotrophic ...

Tropical coral reefs are among the most productive and diverse ecosystems, despite being surrounded by ocean waters where nutrients are in short supply. Benthic dinitrogen (N2) fixation is a significant internal source of "new" nitrogen (N) in reef ecosystems, but related information appears to be sparse. Here, we review the current state (and gaps) of knowledge on N2 fixation associated with c...

Recently, a growing number of studies have confirmed that biological nitrogen fixation is also an important reactive source in coastal regions. However, how benthic and diazotrophic community regions respond to seasonal hypoxia remains largely unknown. In this study, we investigated the spatiotemporal pattern potential rate abundance sediments eutrophic marine ranch experiencing summer using 15...