9,451 research outputs found
Luminary 1B DAP preflight performance evaluation
Preflight analysis of LUMINARY 1B DAP simulation and performance testing for Apollo Mission H
Structural and chemical requirements for histidine phosphorylation by the chemotaxis kinase CheA
The CheA histidine kinase initiates the signal transduction pathway of bacterial chemotaxis by autophosphorylating a conserved histidine on its phosphotransferase domain (P1). Site-directed mutations of neighboring conserved P1 residues (Glu-67, Lys-48, and His-64) show that a hydrogen-bonding network controls the reactivity of the phospho-accepting His (His-45) in Thermotoga maritima CheA. In particular, the conservative mutation E67Q dramatically reduces phospho-transfer to P1 without significantly affecting the affinity of P1 for the CheA ATP-binding domain. High resolution crystallographic studies revealed that although all mutants disrupt the hydrogen-bonding network to varying degrees, none affect the conformation of His-45. N-15-NMR chemical shift studies instead showed that Glu-67 functions to stabilize the unfavored (NH)-H-delta 1 tautomer of His-45, thereby rendering the N-epsilon 2 imidazole unprotonated and well positioned for accepting the ATP phosphoryl group
Hubungan Antara Imbalan Jasa Dan Motivasi Kerja Perawat Di Puskesmas Manganitu Kabupaten Sangihe
Imbalan jasa merupakan tambahan atau tunjangan yang diterima secara tidak rutin atau semua pengeluaran yang di keluarkan oleh Perusahaan atau pekerja dan diterima serta dinikmati oleh pekerja baik secara langsung atau tidak langsung. Motivasi penting karena dengan motivasi suatu organisasi dapat mencapai tujuannya dan semua anggotanya dapat menampilkan kinerja optimal, dan imbalan jasa adalah salah satu hal yang dapat memotivasi kinerja kerja perawat. Tujuan penelitian untuk mengetahui Hubungan Antara Imbalan Jasa Dengan Motivasi Kerja Perawat Di Puskesmas Manganitu Kabupaten Sangihe. Desain penelitian yang digunakan adalah deskriptif analitik dengan metode cross sectional. Teknik pengambilan sampel dilakukan dengan total sampling dengan jumlah sampel 30 orang. Hasil penelitian menggunakan Uji Korelasi Chi Square didapatkan nilai p = 0,003 < α = 0,05 OR = 7,500. Kesimpulan hasil penelitian menunjukkan adanya hubungan antara imbalan jasa dengan motivasi kerja perawat di puskesmas manganitu kabupaten sangihe. Saran memperhatikan kesejahteraan perawat dengan pemberian imbalan yang sesuai sehingga dapat memberikan pelayanan yang lebih berkualitas
Kinetics of the Rhodium‐Catalyzed Hydroaminomethylation of 1‐Decene in a Thermomorphic Solvent System
Metaplectic Ice
Spherical Whittaker functions on the metaplectic n-fold cover of GL(r+1) over
a nonarchimedean local field containing n distinct n-th roots of unity may be
expressed as the partition functions of statistical mechanical systems that are
variants of the six-vertex model. If n=1 then in view of the Casselman-Shalika
formula this fact is related to Tokuyama's deformation of the Weyl character
formula. It is shown that various properties of these Whittaker functions may
be expressed in terms of the commutativity of row transfer matrices for the
system. Potentially these properties (which are already proved by other
methods, but very nontrivial) are amenable to proof by the Yang-Baxter
equation
Impact of arbuscular mycorrhizal fungi on the growth and rhizobium symbioses development in kabuli and desi chickpeas grown under drought stress conditions
Non-Peer ReviewedArbuscular mycorrhizal fungi (AMF) have induced drought tolerance in several plants and could increase chickpea yield under semiarid climates. Desi chickpea are more drought tolerant than Kabuli suggesting a weak mycorrhizal symbiosis in this chickpea type. A greenhouse experiment was conducted to assess the extent and the impact of arbuscular mycorrhizal symbiosis on the growth and yield in Kabuli and Desi chickpea cultivars under well watered and drought stress conditions and on their association with Mesorhizobium cicer. The experiment had a split-plot design with two water levels, 30% of field capacity (deficient water) and 70% of field capacity (sufficient water) randomized in main plots. Two inoculation treatments, M. cicer + AMF and M. cicer only, were applied to chickpea (Kabuli, CDC Frontier and CDC Xena; Desi, CDC Anna, and CDC Nika). The factorial combinations of inoculation and cultivar were randomized in the subplots. There were four repetitions. One set of plants was harvested at the time of symbioses development and another set was harvested at seed maturation. The data was analyzed with ANOVA. Results indicated that the Kabuli and Desi chickpea mycorrhizal symbioses are not different, as indicated by the absence of a cultivar by inoculation interaction on shoot and root growth, nodulation and nitrogen fixation. AM Fungi inoculation delayed nodule development but had no effect on grain yield. CDC Frontier had 4 times more nodules and 6 times more nitrogenase activity than CDC Anna, Nika and Xena
The Impact of Endothall on the Aquatic Plant Community of Kress Lake, Washington
CA dense mat-forming population of Eurasian watermilfoil
(
Myriophyllum spicatum
L
.
) was interfering with fishing and
recreation in a small western Washington lake. A low concentration
(1.5 mg/L active ingredient) of the herbicide endothall
formulated as Aquathol® K was used in 2000 to attempt
to selectively control the Eurasian watermilfoil. Aquatic plant
biomass and frequency data were collected before treatment,
ten weeks after treatment and during the growing season for
3 additional years. Macrophyte data were analyzed to assess
the herbicide’s impacts on Eurasian watermilfoil as well as
the rest of the aquatic plant community. Results showed a significant
decrease in Eurasian watermilfoil biomass and frequency
10 weeks after treatment. The Eurasian watermilfoil
continued to be present, but at a significantly reduced level
through the remainder of the study (3 years after treatment).
Of the native plant species, large-leaf pondweed (
Potamogeton
amplifolius
Tucker
.
) frequency and biomass was significantly
reduced after treatment. Common elodea (
Elodea canadensis
Rich.), muskgrass (
Chara
sp. Vallaint.) and bladderwort (
Utricularia
sp. L.) all increased significantly after treatment.
(PDF has 6 pages.
A GATA4/WT1 cooperation regulates transcription of genes required for mammalian sex determination and differentiation
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