tritium in the oceans

... constrained to accept the hypothesis of an initial watering of the planet rather than a gradual accumulation The Composition of the Oceans If indeed the oceans were present virtually from the day the ... salts over the continents is in the order of 109 tons y1 Since the weight of the sea salts in the oceans is in the order of 13 1017 tons the recycling time would be 1300 million years (My) The residence ... documented Improving our understanding of the marine chemistry of the PGEs both in the water column and in marine sediments is important to interpreting the marine Os isotope record, exploiting PGEs...

Ngày tải lên: 28/03/2014, 10:20

... However, there was a great increase in glutamate level during the pre-convulsive state, and the seizures themselves were blocked by AP5 given intraventricularly 30 mins before seizure induction, in ... (Dakopatts Inc., Mississauga, Canada) for hours at room temperature After three additional rinses in TPBS, antibody-binding sites were revealed by a 15 incubation in 0.2% diaminobenzidine in TPBS ... were incubated overnight at room temperature in rabbit polyclonal anti-calbindin-D (anti-CaBP, Sigma Inc., St Louis MO) They were then washed three times for in 0.1 M TPBS, and incubated in :...

Ngày tải lên: 07/08/2014, 17:22

... affect the PK profile of these drugs during such severe infections Administration of the four β-lactams was made according to local guidelines These drugs are generally used in the participating ... strain) Piperacillin-tazobactam was preferred as first-line therapy in cases of proven or suspected intra-abdominal infections Ceftazidime and cefepime was used as first-line therapy in other ... before the infusion (0 hour) and 1, 1.5, 4.5, and or hours (depending on the frequency of administration of the β-lactam) thereafter; these blood-draw time points were chosen as they belong to the...

Ngày tải lên: 13/08/2014, 21:20

... difficulties in the classroom setting, the research was aimed at finding out: (1) the students’ assessment of the importance of oral presentation skills in their future work, (2) the problems they might ... giving presentations, and (3) factors causing their difficulties and their suggested solutions Specifically, the study has been conducted in the form of survey research, with the informants of the ... Besides, the data from the study confirm the fact that the infrequent and inadequate feedback and assessment from teacher(s) and the institution’s lack of conductive facilities also contributed to these...

Ngày tải lên: 07/09/2013, 13:02

... main parts The introduction sets the scene and engages the audience by motivating them to listen by relating the topic to their interests The body must explain, support, and defend the theme in ... Getting and maintaining audiences attention Knowing where to stand Keeping the speech flow/Keep talking Knowing how to begin (i.e stating the purpose, explaining to the audience who you are, introducing ... formula, in which P stands for the main point; R stands for the reason for the speech; E stands for the example to illustrate the main point and P stands for restating the main point Secondly, the...

Ngày tải lên: 29/01/2014, 10:43

... well as mothers’ frequency of drinking In the FFS, we create a measure of binge drinking indicating whether mothers drink at least alcoholic beverages per day In the MCS, we create a 5-point scale ... friend; whether they feel alone; and whether they know most of their neighbors In the MCS, mothers report whether their friends live locally; whether they are friendly with their neighbors; and the ... father or cohabiting with the biological father At later ages, we distinguish among mothers who are single, married to the biological father, cohabiting with the biological father, or coresiding...

Ngày tải lên: 12/02/2014, 12:20

... with valine, the ˚ cavity volume increased to 43 A3, reflecting a reduction in ˚ the surface area of the residue (% 59 A2) and in the interactions occurring there (Fig 8) Met88 resides in the 142 ... with valine (C and D), the cavity volume increased to 43 A3, reflecting a reduction in the surface area of the residue (% 59 A2) and in the interactions occurring there (corresponding to the b-sheet) ... and the M88V mutant (by substitution using the same program) for the existence of internal cavities in this region in the structure A significant cavity in the WT phage structure in the neighboring...

Ngày tải lên: 19/02/2014, 12:20

... Enzyme kinetic study The Km (Michaelis constant) and Vmax (maximum velocity) values were determined by incubating the diluted recombinant proteins in the standard reaction mixture in the presence ... determined as described in (A) in the presence of increasing concentrations of Mg2+ (C) pH dependency of the enzyme was examined as described above using several buffers with increasing pH values The ... hydrolysis, in the presence of increasing concentrations of NaF The PPase activated PPi hydrolysis rate was then calculated Larval molting inhibition assay To confirm whether the native PPase enzyme is involved...

Ngày tải lên: 20/02/2014, 11:20

... together, and to the boding crows with three-fold note greeting the ruddy torch of the rising dawn; and in the half light of the morning to hear the nightingale warbling in the bushes, and the swallow ... raised their voices together and competed with the birds in song, swaying up and down in charming lines, singing and laughing in the cool shade They were dressed in red and white, like the flowers ... leaves spring And flowers are budding on the plain, When nightingales so sweetly sing And through the greenwood swells the strain, Then joy I in the song and in the flower, Joy in myself but in my...

Ngày tải lên: 21/02/2014, 20:20

Ngày tải lên: 23/02/2014, 15:20

... of what being Spanish means not just in post-Franco Spain but also in the Spain of the new millennium In the following pages the reader will find treatments of some of the crucial themes already ... making their way to the southern shore of Spain during the 1990s On the other hand, the stories told about these people also depend on the social and political context of the present for their ... that in the second half of the 1960s, during the comparatively liberal interlude which started in 1966—with the promulgation of the new “Ley de Prensa”—and finished in 1971 the year in which the...

Ngày tải lên: 07/03/2014, 15:20

... deciphering the origin of the destabilization and hence, diminution of the melting temperature (Tm) in the former Base stacking in the vicinity of A C mismatch in PNAÆDNA and DNA duplexes Intra ... interrupted stacking, fluctuating nature of the hydrogen bond and water organization in the vicinity of the mismatch might be the contributing factors for the increase in free energy and diminished stability ... significant variableness in the water interactions surrounding the mismatch Water interaction in the vicinity of A C mismatch Figure 7A–L depicts the nature of water interaction in the neighbourhood...

Ngày tải lên: 07/03/2014, 21:20

Ngày tải lên: 08/03/2014, 12:20

... more of the identified key themes of good practice The rationale for site selection is further explained in the “Introduction” to the Interview Reports In parallel to the site visits, the research ... pressure But an investment in this kind of planning will be amply repaid over the life of the project: in the quality of the products, in smooth workflow, in staff morale, and not least in the total ... costs the project will incur-costs for initial planning, choosing data specifications, building or choosing tracking and documentation systems, training staff, and so forth-as well as the incremental...

Ngày tải lên: 08/03/2014, 14:20

... spreading into the Mekong Basin in Northern Lao PDR from China 25 The Impacts of Introductions and Stocking of Exotic Species in the Mekong Basin and Policies for Their Control 7.1.3 Other organisms ... farming is the gradual elimination of the flooded forest in the lower part of the basin along with the reduction in flooded area associated with the poldering of certain areas Drastic changes in ... Species in the Mekong Basin and Policies for Their Control x The Impacts of Introductions and Stocking of Exotic Species in the Mekong Basin and Policies for Their Control xi The Impacts of Introductions...

Ngày tải lên: 14/03/2014, 08:48

... countries in the region with secular laws governing their family codes CONVENTION ON THE RIGHTS OF THE CHILD Adopted in 1989, the Convention on the Rights of the Child (CRC) is a legally binding international ... Elimination of Discrimination against Women (CEDAW) has become the major international agreement defining the rights of girls and women.3 Article of the convention defines discrimination against ... Africa, with the aim of sharing experiences in developing and implementing national policies The seminar highlighted the lack of unity in the visions for youth development among the participating countries;...

Ngày tải lên: 14/03/2014, 14:20

... containing carbon dioxide is trapped in the mask and then is breathed in again) For pregnant workers, breathing is already affected by the pressure of the growing fetus on the diaphragm The interference ... away owing to inadequate coordination and funding at the international level and lack of capacity and funds in many developing countries The gap between the rich and poorer countries in the availability ... and trained in its care, use and limitations before wearing or using it for the first time and at regular intervals thereafter and the worker shall participate in such instruction and training It...

Ngày tải lên: 15/03/2014, 05:20

... principle, an increase in financing costs would have a negative effect on the basis Due to the difficulty in obtaining data on institution-level funding constraints, we use the spread between financial ... the increase in the discounted trading profits that an investor would obtain under the assumption of no trading and funding costs Specifically, the profits from a given investment strategy, in ... and the months of 2011 included in the sample, the basis behaves like a non-stationary variable For this reason, instead of analysing the determinants of the basis we study the determinants of the...

Ngày tải lên: 15/03/2014, 07:20

... 8.2 The Lasting Influence of the Old Business Elite in MENA: Older Firms The Lasting Influence of the Old Business Elite in MENA: Older Entrepreneurs among Younger Populations Less Educated Business ... 8.2 The Lasting Influence of the Old Business Elite in MENA: Older Firms The Lasting Influence of the Old Business Elite in MENA: Older Entrepreneurs among Younger Populations Less Educated Business ... uncertainty all rank high in the minds of business managers (figure 0.6) In many countries, businesses also point to reform gaps in the regulatory environment, in access to finance, and in access...

Ngày tải lên: 15/03/2014, 10:20

... study site in A City and dust from refuse incineration, implying that almost of the total amount of Cd in the atmosphere originates from refuse incineration as in the case of Pb Dust from Other Sources ... Refuse Incineration Plants (from literature) The ratios of the Pb and Cd concentrations in the atmosphere obtained by the National Air Surveillance Network are almost identical to those of the study ... remain almost constant, presumably because of the mixing and uniformatization of a large amount of waste containing lead in refuse incineration plants ● Annual Mean Values at 16 Stations of the...

Ngày tải lên: 16/03/2014, 00:07