46 research outputs found
HUBUNGAN KOMPONEN PERILAKU (PENGETAHUAN, SIKAP, TINDAKAN) MEROKOK PADA MAHASISWA PSIK UNITRI ANGKATAN 2009
Behavior is an individual's reaction to stimuli that are very influential to the person both inside and outside his/her personal. To avoid negative behavior, such as smoking especially students need early treatment and a positive pressure so that we hope can be achieved. The purpose of this study is to identify the relationship between knowledge, attitudes and actions of smoking on students of Nursing Science Program University of Tribhuwana Tunggadewi Malang Year 2009. Research design use correlational with Cross Sectional method. Total population 48 people with 43 samples taken with purrpusive sampling. Instrument that uses a questionnaire with nominal, ordinal scale, and be analyzed use Spearman's rho test. The result of the study showed most students 72.1% had a good knowledge. While for positive attitude there is 90.7% and action showed 44.2%. The result of analysis show p value 0.000
The Influence of Free Quintessence on Gravitational Frequency Shift and Deflection of Light with 4D momentum
Based on the 4D momentum, the influence of quintessence on the gravitational
frequency shift and the deflection of light are examined in modified
Schwarzschild space. We find that the frequency of photon depends on the state
parameter of quintessence : the frequency increases for and
decreases for . Meanwhile, we adopt an integral power number
() to solve the orbital equation of photon. The photon's
potentials become higher with the decrease of . The behavior of
bending light depends on the state parameter sensitively. In
particular, for the case of , there is no influence on the
deflection of light by quintessence. Else, according to the H-masers of GP-A
redshift experiment and the long-baseline interferometry, the constraints on
the quintessence field in Solar system are presented here.Comment: 12 pages, 2 figures, 4 tables. European Physical Journal C in pres
Cosmological expansion and local systems: a Lema\^{i}tre-Tolman-Bondi model
We propose a Lema\^{i}tre-Tolman-Bondi system mimicking a two-body system to
address the problem of the cosmological expansion versus local dynamics. This
system is strongly bound but participates in the cosmic expansion and is
exactly comoving with the cosmic substratum
The Similarity Hypothesis in General Relativity
Self-similar models are important in general relativity and other fundamental
theories. In this paper we shall discuss the ``similarity hypothesis'', which
asserts that under a variety of physical circumstances solutions of these
theories will naturally evolve to a self-similar form. We will find there is
good evidence for this in the context of both spatially homogenous and
inhomogeneous cosmological models, although in some cases the self-similar
model is only an intermediate attractor. There are also a wide variety of
situations, including critical pheneomena, in which spherically symmetric
models tend towards self-similarity. However, this does not happen in all cases
and it is it is important to understand the prerequisites for the conjecture.Comment: to be submitted to Gen. Rel. Gra
Effects of watershed land use on nitrogen concentrations and δ15 Nitrogen in groundwater
Author Posting. © The Authors, 2005. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Biogeochemistry 77 (2006): 199-215, doi:10.1007/s10533-005-1036-2.Eutrophication is a major agent of change affecting freshwater, estuarine, and marine
systems. It is largely driven by transportation of nitrogen from natural and anthropogenic
sources. Research is needed to quantify this nitrogen delivery and to link the delivery to
specific land-derived sources. In this study we measured nitrogen concentrations and δ15N
values in seepage water entering three freshwater ponds and six estuaries on Cape Cod,
Massachusetts and assessed how they varied with different types of land use. Nitrate
concentrations and δ15N values in groundwater reflected land use in developed and pristine
watersheds. In particular, watersheds with larger populations delivered larger nitrate loads with
higher δ15N values to receiving waters. The enriched δ15N values confirmed nitrogen loading
model results identifying wastewater contributions from septic tanks as the major N source.
Furthermore, it was apparent that N coastal sources had a relatively larger impact on the N
loads and isotopic signatures than did inland N sources further upstream in the watersheds.
This finding suggests that management priorities could focus on coastal sources as a first
course of action. This would require management constraints on a much smaller population.This work was supported
by funds from the Woods Hole Oceanographic Institution Sea Grant Program, from the
Cooperative Institute for Coastal and Estuarine Environmental Technology, from
Massachusetts Department of Environmental Protection to Applied Science Associates,
Narragansett, RI, as well as from Palmer/McLeod and NOAA National Estuarine Research
Reserve Fellowships to Kevin Kroeger. This work is the result of research sponsored by NOAA
National Sea Grant College Program Office, Department of Commerce, under Grant No.
NA86RG0075, Woods Hole Oceanographic Institution Sea Grant Project No. R/M-40
Cosmic Dynamics in Gravity
In this paper we consider FRW cosmology in gravity. It is shown
that in particular cases the bouncing behavior may appears in the model whereas
the equation of state (EoS) parameter may crosses the phantom divider. For the
dynamical universe, quantitatively we also find parameters in the model which
satisfies two independent tests:the model independent Cosmological Redshift
Drift (CRD) test and the type Ia supernova luminosity distances.Comment: 15 pages, 12 figure
Whole-genome sequencing reveals host factors underlying critical COVID-19
Critical COVID-19 is caused by immune-mediated inflammatory lung injury. Host genetic variation influences the development of illness requiring critical care1 or hospitalization2,3,4 after infection with SARS-CoV-2. The GenOMICC (Genetics of Mortality in Critical Care) study enables the comparison of genomes from individuals who are critically ill with those of population controls to find underlying disease mechanisms. Here we use whole-genome sequencing in 7,491 critically ill individuals compared with 48,400 controls to discover and replicate 23 independent variants that significantly predispose to critical COVID-19. We identify 16 new independent associations, including variants within genes that are involved in interferon signalling (IL10RB and PLSCR1), leucocyte differentiation (BCL11A) and blood-type antigen secretor status (FUT2). Using transcriptome-wide association and colocalization to infer the effect of gene expression on disease severity, we find evidence that implicates multiple genes—including reduced expression of a membrane flippase (ATP11A), and increased expression of a mucin (MUC1)—in critical disease. Mendelian randomization provides evidence in support of causal roles for myeloid cell adhesion molecules (SELE, ICAM5 and CD209) and the coagulation factor F8, all of which are potentially druggable targets. Our results are broadly consistent with a multi-component model of COVID-19 pathophysiology, in which at least two distinct mechanisms can predispose to life-threatening disease: failure to control viral replication; or an enhanced tendency towards pulmonary inflammation and intravascular coagulation. We show that comparison between cases of critical illness and population controls is highly efficient for the detection of therapeutically relevant mechanisms of disease
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In situ determination of desorbable methane content by use of three different decay functions
The desorptive properties of methane in selected western coal seams were studied through actual field measurements using a manual bubble desorbometer and later verified through laboratory modeling. Data were reduced using a power decay function, a quadratic function, and an exponential function. Methane desorption characteristics from individual coal seams were shown theoretically to be a good estimator of a seams total methane content to within {plus minus}20%. A laboratory was set up and equipped to properly analyze and reduce field data, in addition to providing a controlled model for studying methane adsorption properties on coal. The results of the field tests indicate that all three theoretical desorption functions provide a satisfactory model of the desorption process based on estimated and actual gas contents, and on superior coefficient of regression. The estimated gas content for four western coal mines are presented based on computer reduction of data obtained from field and laboratory tests. One of the investigated coal seams is located in Colorado (B seam of the Dutch Creek Mine in Carbondale) and three are located in Central Utah (Rock Canyon seam of the Soldier Creek Mine), Lower Sunnyside (Sunnyside Coal Mines) and Sub 3 (Castle Gate Mine) seam. Their average methane content ranges from 1.8 cc/g to 5.5 cc/g. Graphic results from laboratory tests indicated the power function may provide a more accurate model of the desorption process than the other two theories discussed. 4 refs., 12 figs., 3 tabs