463 research outputs found
Fermented liquid feed for pigs
Since the announcement of the ban on the use of antibiotics as antimicrobial growth promoters in the feed of pigs in 2006 the investigation towards alternative feed additives has augmented considerably. Although fermented liquid feed is not an additive, but a feeding strategy, the experimental work examining its possible advantages also saw a rise. The use of fermented liquid feed (FLF) has two main advantages, namely that the simultaneous provision of feed and water may result in an alleviation of the transition from the sow milk to solid feed and may also reduce the time spent to find both sources of nutrients, and secondly, that offering FLF with a low pH may strengthen the potential of the stomach as a first line of defence against possible pathogenic infections. Because of these two advantages, FLF is often stated as an ideal feed for weaned piglets. The results obtained so far are rather variable, but in general they show a better body weight gain and worse feed/gain ratio for the piglets. However, for growing-finishing pigs on average a better feed/gain ratio is found compared to pigs fed dry feed. This better performance is mostly associated with less harmful microbiota and better gut morphology. This review provides an overview of the current knowledge of FLF for pigs, dealing with the FLF itself as well as its effect on the gastrointestinal tract and animal performance
High energy photon interactions at the LHC
Experimental prospects for studying high-energy photon-photon and
photon-proton interactions at the CERN Large Hadron Collider (LHC) are
discussed. Cross sections are calculated for many electroweak and beyond the
Standard Model processes. Selection strategies based on photon interaction
tagging techniques are studied. Assuming a typical LHC multipurpose detector,
various signals and their irreducible backgrounds are presented after applying
acceptance cuts. Prospects are discussed for the Higgs boson search, detection
of supersymmetric particles and of anomalous quartic gauge couplings, as well
as for the top quark physics.Comment: 17 pages, 16 tables and 14 figure
Associated W and Higgs boson photoproduction and other electroweak photon induced processes at the LHC
Experimental prospects for studying at the LHC photon-proton interactions at
center of mass energies up to and above 1 TeV are discussed. Cross sections are
presented for many electroweak and beyond the Standard Model processes.
Selection strategies based on photon interaction tagging techniques are
discussed. Assuming a typical LHC multipurpose detector, the production of
single top associated to a W, and anomalous top signals and their irreducible
backgrounds are presented after applying detector acceptance cuts. The
associated photoproduction of Higgs and W bosons has a typical cross section of
20 fb. The possibility of observing this reaction is investigated for
topologies with signal-to-noise ratio close to unity.
Comment: 8 pages, 8 tables, 6 figures. Summary talk given at the Workshop on
"High-energy photon collisions at the LHC", April 22-25, 2008, CERN,
Switzerland. To appear in the proceeding
Single top quark photoproduction at the LHC
High-energy photon-proton interactions at the LHC offer interesting
possibilities for the study of the electroweak sector up to TeV scale and
searches for processes beyond the Standard Model. An analysis of the W
associated single top photoproduction has been performed using the adapted
MadGraph/MadEvent and CalcHEP programs interfaced to the Pythia generator and a
fast detector simulation program. Event selection and suppression of main
backgrounds have been studied. A comparable sensitivity to |V_{tb}| to those
obtained using the standard single top production in pp collisions has been
achieved already for 10 fb^{-1} of integrated luminosity. Photoproduction at
the LHC provides also an attractive framework for observation of the anomalous
production of single top due to Flavour-Changing Neutral Currents. The
sensitivity to anomalous coupling parameters, k_{tu\gamma} and k_{tc\gamma} is
presented and indicates that stronger limits can be placed on anomalous
couplings after 1 fb^{-1}
Motivasi Melakukan Kejahatan pada Narapidana Kasus Pembunuhan
Abstract
Everyone has a phase of life that each will be different to achieve the purpose of his life. Someone will have a variety of reasons to traverse with a variety of options to reach the goal, such as in a manner that complies with the norm or in a manner that violates the applicable norm. The reason and the goal will push from the inside of a person to perform an act. Someone who attended a shortcut to reach the goal will be compelled do by way of breaking from the norm. The actions violated the norms of the closer a person is to be compelled to do evil, especially the crime of murder. The murder is one of the consequences of aggressive behavior with a variety of diverse motivations. This research focuses on the murder convict crime because it is a crime against the backdrop of the most complex. The purpose of this research was to understand the motivation of crimes on inmate murder case. The method used was qualitative research with phenomenological approach. Engineering data collection using a semi structured interview as much as approximately 25 questions. Participants of research consists of 4 prisoners with characteristic (a) inmate lapas class IIA Sragen (b) aged 18-35 years (c) sex male (d) has a background of murder case (e) convicts penalties has been decided 3 years and over (f) does not have a mental disorder that weight (g) willing to become informants. The results of the research there are 4 informant convicts have various motivations for committing the crime of murder. The motivation among others the existence of jealousy, heartache, and the emotion of a moment. From the study it can be concluded the majority of murder cases of internal motivation based on the event will be supported by a particular situation giving rise to the emotion of a moment on each informant.
Keywords: Motivation. Inmates. The Crime Of Murder
Single Vectorlike Quark Production at the LHC
A gluon resonance G of mass below 1 TeV could be the origin of the t\bar{t}
forward-backward asymmetry observed at the Tevatron provided that new decay
modes G->\bar{q}Q, with q a standard quark and Q its massive excitation, make G
broad enough. We consider all the different cases, with q the top, the bottom
or a light quark and dominant decay modes Q->Wq' or Q->Zq. We show that current
experimental searches are unable to probe the model, but that minimal
departures from these analyses can explore a large region of its parameter
space for the current LHC luminosity. This includes the challenging case with
the new quarks decaying mostly into light quark flavors. In some channels not
only the heavy quark but also the massive gluon can be reconstructed, which
would stablish the origin of the t\bar{t} asymmetry. Similar analyses can be
applied to more general models with new massive gluons and vectorlike quarks.Comment: 17 pages, 8 figures. Version 2: references adde
THE TOOLS AND MONTE CARLO WORKING GROUP Summary Report from the Les Houches 2009 Workshop on TeV Colliders
This is the summary and introduction to the proceedings contributions for the
Les Houches 2009 "Tools and Monte Carlo" working group.Comment: 144 Pages. Workshop site
http://wwwlapp.in2p3.fr/conferences/LesHouches/Houches2009/ . Conveners were
Butterworth, Maltoni, Moortgat, Richardson, Schumann and Skand
Effects of dose and formulation of carvacrol and thymol on bacteria and some functional traits of the gut in piglets after weaning
Two trials were conducted to study the effects of dose and formulation of carvacrol and thymol on bacterial counts, metabolites and functional traits of the gut in weaned piglets. In the first experiment (Exp. I), 25 piglets (28 d, 6.59 +/- 0.48 kg BW) were allocated to five dietary treatments: a control diet, or the same diet supplemented with either carvacrol or thymol at doses of 500 and 2000 mg kg(-1). In the second experiment (Exp. II), 35 piglets (28 d, 7.99 +/- 0.73 kg BW) were assigned to seven dietary treatments: the same control diet as in Exp. I, or this diet supplemented with thymol in one of three formulations (on celite, on alphacel or microencapsulated) at doses of 500 and 2000 mg kg(-1). At 11/12 days post-weaning piglets were euthanised, and digesta from stomach, proximal and distal small intestine were sampled for bacteriological and biochemical analysis. Small intestinal tissue was sampled for histomorphological determinations. In none of the experiments or sections of the gut was the number of bacteria lowered by the carvacrol or thymol supplementation. In Exp. I, the villus/crypt ratio at the distal small intestine for the experimental diets (1.30-1.32) was higher than for the control diet (1.24) (p < 0.05). Thymol fed animals in Exp. II had a lower number of intra-epithelial lymphocytes at the proximal (p < 0.05) and at the distal (p < 0.1) small intestine as compared to control animals. Mean concentration of the active ingredient in the stomach and proximal small intestine for the 2000 mg kg(-1) carvacrol diet was 521 and 5 mg kg(-1) fresh digesta, respectively, and for the 2000 mg kg(-1) thymol diets it ranged between 475 and 647 and between 13 and 24 mg kg(-1) fresh digesta, respectively. Cumulative absorption in the proximal small intestine was higher than 90% for all treatments and was not affected by formulation type. These data suggest that carvacrol and thymol can improve gut health, but evidence for clear antimicrobial effects towards the major culturable bacteria of the pig foregut is limited
Unconventional phenomenology of a minimal two-Higgs-doublet model
Two-Higgs-doublet models (2HDM) are simple extensions of the Standard Model
(SM) where the scalar sector is enlarged by adding a weak doublet. As a result,
the Higgs potential depends in general on several free parameters which have to
be carefully chosen to give predictions consistent with the current precision
data. We consider a 2HDM invariant under a twisted custodial symmetry and
depending only on three extra parameters beyond the SM ones. This model
naturally features an inverted mass spectrum with a light pseudoscalar state
and a heavy SM-like Higgs boson. We thoroughly analyze direct and indirect
constraints and present a few unconventional though promising signatures at the
LHC.Comment: 37 pages, 20 figure
X-ray emission from the Sombrero galaxy: discrete sources
We present a study of discrete X-ray sources in and around the
bulge-dominated, massive Sa galaxy, Sombrero (M104), based on new and archival
Chandra observations with a total exposure of ~200 ks. With a detection limit
of L_X = 1E37 erg/s and a field of view covering a galactocentric radius of ~30
kpc (11.5 arcminute), 383 sources are detected. Cross-correlation with Spitler
et al.'s catalogue of Sombrero globular clusters (GCs) identified from HST/ACS
observations reveals 41 X-rays sources in GCs, presumably low-mass X-ray
binaries (LMXBs). We quantify the differential luminosity functions (LFs) for
both the detected GC and field LMXBs, whose power-low indices (~1.1 for the
GC-LF and ~1.6 for field-LF) are consistent with previous studies for
elliptical galaxies. With precise sky positions of the GCs without a detected
X-ray source, we further quantify, through a fluctuation analysis, the GC LF at
fainter luminosities down to 1E35 erg/s. The derived index rules out a
faint-end slope flatter than 1.1 at a 2 sigma significance, contrary to recent
findings in several elliptical galaxies and the bulge of M31. On the other
hand, the 2-6 keV unresolved emission places a tight constraint on the field
LF, implying a flattened index of ~1.0 below 1E37 erg/s. We also detect 101
sources in the halo of Sombrero. The presence of these sources cannot be
interpreted as galactic LMXBs whose spatial distribution empirically follows
the starlight. Their number is also higher than the expected number of cosmic
AGNs (52+/-11 [1 sigma]) whose surface density is constrained by deep X-ray
surveys. We suggest that either the cosmic X-ray background is unusually high
in the direction of Sombrero, or a distinct population of X-ray sources is
present in the halo of Sombrero.Comment: 11 figures, 5 tables, ApJ in pres
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