380 research outputs found
Entanglement fidelity for electron-electron interaction in strongly coupled semiclassical plasma and under external fields
This paper presents the effects of AB-flux field and electric field on
electron-electron interaction, encircled by a strongly coupled semiclassical
plasma. We found that weak external fields are required to perpetuate a
low-energy elastic electron-electron interaction in a strongly coupled
semiclassical plasma. The entanglement fidelity in the interaction process has
been examined. We have used partial wave analysis to derive the entanglement
fidelity. We found that for a weak electric field, the fidelity ratio for
electron-electron interaction increase as projectile energy increase but
remains constant or almost zero for a strong electric field. Our results
provide an invaluable information on how the efficiency of entanglement
fidelity for a low-energy elastic electron-electron interaction in a strongly
coupled semiclassical plasma can be influenced by the presence of external
fields
Cooperative Education among the Department of Agrarian Reform–Assisted Cooperatives in Cagayan, Northern Philippines
The study was conducted to determine the status of cooperative education among the Department of Agrarian Reform (DAR)– assisted cooperatives in Cagayan, Northern Philippines. The respondents were officers from the cooperatives assisted by DAR Provincial Office. Using the descriptive-qualitative research design, primary data was obtained from the respondents through personal interviews and focal group discussions and secondary data from records of DAR. The study revealed that most of the cooperatives are multi-purpose cooperatives. Majority of the respondents are the Agrarian Reform beneficiaries with a mean age of 44. Forty percent are college graduates and only a few have reached elementary level. The cooperative officers’ participation to the mandated training curricula comprised 33% of the board of directors and the least participant comes from the education committee. All target groups for each trainings were represented but attendance was not 100%. The respondents finished the mandatory trainings with an average daily cost of PhP1,200 per participant. The most pressing problem encountered in the conduct of the training was the language used in the delivery of lectures. Other problems encountered were financial difficulty among participants, the venue not being conducive to learning, accessibility of training venue, and the participants unwillingness
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A review on approaches to solving Poisson’s equation in projection-based meshless methods for modelling strongly nonlinear water waves
Three meshless methods, including incompressible smooth particle hydrodynamic (ISPH), moving particle semi-implicit (MPS) and meshless local Petrov–Galerkin method based on Rankine source solution (MLPG_R) methods, are often employed to model nonlinear or violent water waves and their interaction with marine structures. They are all based on the projection procedure, in which solving Poisson’s equation about pressure at each time step is a major task. There are three different approaches to solving Poisson’s equation, i.e. (1) discretizing Laplacian directly by approximating the second-order derivatives, (2) transferring Poisson’s equation into a weak form containing only gradient of pressure and (3) transferring Poisson’s equation into a weak form that does not contain any derivatives of functions to be solved. The first approach is often adopted in ISPH and MPS, while the third one is implemented by the MLPG_R method. This paper attempts to review the most popular, though not all, approaches available in literature for solving the equation
{\kappa} state solutions for the fermionic massive spin-1/2 particles interacting with double ring-shaped Kratzer and oscillator potentials
In recent years, an extensive survey on various wave equations of
relativistic quantum mechanics with different types of potential interactions
has been a line of great interest. In this regime, special attention has been
given to the Dirac equation because the spin-1/2 fermions represent the most
frequent building blocks of the molecules and atoms. Motivated by the
considerable interest in this equation and its relativistic symmetries (spin
and pseudospin) in the presence of solvable potential model, we attempt to
obtain the relativistic bound states solution of the Dirac equation with double
ring-shaped Kratzer and oscillator potentials under the condition of spin and
pseudospin symmetries. The solutions are reported for arbitrary quantum number
in a compact form. the analytic bound state energy eigenvalues and the
associated upper- and lower-spinor components of two Dirac particles have been
found. Several typical numerical results of the relativistic eigenenergies have
also been presented. We found that the existence or absence of the ring shaped
potential potential has strong effects on the eigenstates of the Kratzer and
oscillator particles with a wide band spectrum except for the
pseudospin-oscillator particles where there exist a narrow band gap.Comment: 27 pages, 1 figur
Bezlotoxumab for Prevention of Recurrent Clostridium difficile Infection
BACKGROUND Clostridium difficile is the most common cause of infectious diarrhea in hospitalized patients. Recurrences are common after antibiotic therapy. Actoxumab and bezlotoxumab are human monoclonal antibodies against C. difficile toxins A and B, respectively. METHODS We conducted two double-blind, randomized, placebo-controlled, phase 3 trials, MODIFY I and MODIFY II, involving 2655 adults receiving oral standard-of-care antibiotics for primary or recurrent C. difficile infection. Participants received an infusion of bezlotoxumab (10 mg per kilogram of body weight), actoxumab plus bezlotoxumab (10 mg per kilogram each), or placebo; actoxumab alone (10 mg per kilogram) was given in MODIFY I but discontinued after a planned interim analysis. The primary end point was recurrent infection (new episode after initial clinical cure) within 12 weeks after infusion in the modified intention-to-treat population. RESULTS In both trials, the rate of recurrent C. difficile infection was significantly lower with bezlotoxumab alone than with placebo (MODIFY I: 17% [67 of 386] vs. 28% [109 of 395]; adjusted difference, −10.1 percentage points; 95% confidence interval [CI], −15.9 to −4.3; P<0.001; MODIFY II: 16% [62 of 395] vs. 26% [97 of 378]; adjusted difference, −9.9 percentage points; 95% CI, −15.5 to −4.3; P<0.001) and was significantly lower with actoxumab plus bezlotoxumab than with placebo (MODIFY I: 16% [61 of 383] vs. 28% [109 of 395]; adjusted difference, −11.6 percentage points; 95% CI, −17.4 to −5.9; P<0.001; MODIFY II: 15% [58 of 390] vs. 26% [97 of 378]; adjusted difference, −10.7 percentage points; 95% CI, −16.4 to −5.1; P<0.001). In prespecified subgroup analyses (combined data set), rates of recurrent infection were lower in both groups that received bezlotoxumab than in the placebo group in subpopulations at high risk for recurrent infection or for an adverse outcome. The rates of initial clinical cure were 80% with bezlotoxumab alone, 73% with actoxumab plus bezlotoxumab, and 80% with placebo; the rates of sustained cure (initial clinical cure without recurrent infection in 12 weeks) were 64%, 58%, and 54%, respectively. The rates of adverse events were similar among these groups; the most common events were diarrhea and nausea. CONCLUSIONS Among participants receiving antibiotic treatment for primary or recurrent C. difficile infection, bezlotoxumab was associated with a substantially lower rate of recurrent infection than placebo and had a safety profile similar to that of placebo. The addition of actoxumab did not improve efficacy. (Funded by Merck; MODIFY I and MODIFY II ClinicalTrials.gov numbers, NCT01241552 and NCT01513239.
A methodology to obtain accurate potential energy Functions for diatomic systems: mathematical point of view
The mathematics used in physical chemistry has changed greatly in the past forty years and it will certainly continue to change more quickly. Theoretical chemists and physicists must have an acquaintance with abstract mathematics if they are to keep up with their field, as the mathematical language in which it is expressed changes. Thinking about it, in this article, we want to show some of the most important concepts of Mathematical Analysis involved in obtaining analytical functions to represent the potential energy interaction for diatomic systems. A basic guide for the construction of a potential based on Dunham\u27s coefficients and an example of a new potential obtained from this methodology is also presented
New Perspectives for Watering Substrate-Based Root Modules in Microgravity in the Advanced Plant Habitat (APH)
No abstract availabl
A methodology to obtain accurate potential energy Functions for diatomic systems: mathematical point of view
The mathematics used in physical chemistry has changed greatly in the past forty years and it will certainly continue to change more quickly. Theoretical chemists and physicists must have an acquaintance with abstract mathematics if they are to keep up with their field, as the mathematical language in which it is expressed changes. Thinking about it, in this article, we want to show some of the most important concepts of Mathematical Analysis involved in obtaining analytical functions to represent the potential energy interaction for diatomic systems. A basic guide for the construction of a potential based on Dunham's coefficients and an example of a new potential obtained from this methodology is also presented
ACL injury prevention, more effective with a different way of motor learning?
What happens to the transference of learning proper jump-landing technique in isolation when an individual is expected to perform at a competitive level yet tries to maintain proper jump-landing technique? This is the key question for researchers, physical therapists, athletic trainers and coaches involved in ACL injury prevention in athletes. The need for ACL injury prevention is clear, however, in spite of these ongoing initiatives and reported early successes, ACL injury rates and the associated gender disparity have not diminished. One problem could be the difficulties with the measurements of injury rates and the difficulties with the implementation of thorough large scale injury prevention programs. A second issue could be the transition from conscious awareness during training sessions on technique in the laboratory to unexpected and automatic movements during a training or game involves complicated motor control adaptations. The purpose of this paper is to highlight the issue of motor learning in relation to ACL injury prevention and to post suggestions for future research. ACL injury prevention programs addressing explicit rules regarding desired landing positions by emphasizing proper alignment of the hip, knee, and ankle are reported in the literature. This may very well be a sensible way, but the use of explicit strategies may be less suitable for the acquisition of the control of complex motor skills (Maxwell et al. J Sports Sci 18:111-120, 2000). Sufficient literature on motor learning and it variations point in that direction
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