Modelling galaxy stellar mass evolution from z~0.8 to today

We apply the empirical method built for z=0 in the previous work of Wang et al. to a higher redshift, to link galaxy stellar mass directly with its hosting dark matter halo mass at z~0.8. The relation of the galaxy stellar mass and the host halo mass M_infall is constrained by fitting both the stellar mass function and the correlation functions at different stellar mass intervals of the VVDS observation, where M_infall is the mass of the hosting halo at the time when the galaxy was last the central galaxy. We find that for low mass haloes, their residing central galaxies are less massive at high redshift than those at low redshift. For high mass haloes, central galaxies in these haloes at high redshift are a bit more massive than the galaxies at low redshift. Satellite galaxies are less massive at earlier times, for any given mass of hosting haloes. Fitting both the SDSS and VVDS observations simultaneously, we also propose a unified model of the M_stars-M_infall relation, which describes the evolution of central galaxy mass as a function of time. The stellar mass of a satellite galaxy is determined by the same M_stars-M_infall relation of central galaxies at the time when the galaxy is accreted. With these models, we study the amount of galaxy stellar mass increased from z~0.8 to the present day through galaxy mergers and star formation. Low mass galaxies gain their stellar masses from z~0.8 to z=0 mainly through star formation. For galaxies of higher mass, the increase of stellar mass solely through mergers from z=0.8 can make the massive galaxies a factor ~2 larger than observed at z=0. We can also predict stellar mass functions of redshifts up to z~3, and the results are consistent with the latest observations.Comment: 12 pages, 10 figures, accepted for publication in MNRA

Is an endoscopic thoracic sympathectomy (ETS) at the T2 level effective in resolving palmar hyperhidrosis and resulting in patient satisfaction?

OBJECTIVE: The objective of this selective evidence-based medicine (EBM) review is to determine whether or not “Is an endoscopic thoracic sympathectomy (ETS) at the T2 level effective in resolving palmar hyperhidrosis and resulting in patient satisfaction?” STUDY DESIGN: Systematic review of three randomized control trials published in 2009, 2016, and 2017, all in the English language. Studies were analyzed and reviewed based on population, intervention, and outcomes measured. DATA SOURCES: Three randomized controlled trials where all published in peer-reviewed journals and researched using the PubMed and CINAHL databases. OUTCOMES MEASURED: All three studies measured the presence or absence of palmar hyperhidrosis (PH) and/or compensatory hyperhidrosis (CH) via patient report and physical examination. All studies also measured patient satisfaction through patient questionnaires. RESULTS: All patients in the studies except one showed immediate anhidrosis postoperatively and no PH recurrence. Despite great initial postoperative results, many patients developed CH symptoms. Patient satisfaction rate was high in all three articles reviewed. CONCLUSIONS: The results from this systemic review suggest an endoscopic thoracic sympathectomy (ETS) at the T2 level is adequately effective in resolving palmar hyperhidrosis and resulting in patient satisfaction

Quantum Computer Emulator

We describe a quantum computer emulator for a generic, general purpose quantum computer. This emulator consists of a simulator of the physical realization of the quantum computer and a graphical user interface to program and control the simulator. We illustrate the use of the quantum computer emulator through various implementations of the Deutsch-Jozsa and Grover's database search algorithm.Comment: 28 pages, 4, figures, see also http://rugth30.phys.rug.nl/compphys/qce.htm ; figures updated, instructions change

The synthesis of 4H-pyran containing hemispherands via pyrylium salts

Two new hemispherands 2a and 2b containing a central 4H-pyran unit were synthesized via appropiately substituted 2,6-phenyl pyrylium salts; largest ΔGo values of complexation of 2a and 2b with different alkali picrates are found for Na+ and K+

Quantum Spin Dynamics and Quantum Computation

We describe a simulation method for a quantum spin model of a generic, general purpose quantum computer. The use of this quantum computer simulator is illustrated through several implementations of Grover's database search algorithm. Some preliminary results on the stability of quantum algorithms are presented.Comment: 6 pages, 4 figures ; Minor errors corrected and figures update

Evaluation of the Early Impact of COVID-19 on Physiotherapy Clinical Placement Learning Models and Client Case-Mix

Clinical placements are fundamental to entry-level physiotherapy education and provide an opportunity for students to translate theory into practice within authentic clinical environments. Student success during clinical placement is a core requirement of physiotherapy programs and a critical component of the pathway to graduation, registration, and then employment. The registration of a physiotherapist confirms that as a student, they have met the profession’s rigorous accreditation requirements. COVID-19 has significantly disrupted physiotherapy clinical placements across Australia, with many placements postponed or cancelled in the early public health response. These placement disruptions may preclude students from demonstrating mandatory pre-registration accreditation requirements, ultimately reducing the number of eligible new-graduate physiotherapists. Creating sustainable clinical placements whilst upholding the professional standard of entry level graduates during the pandemic, calls for innovative solutions to monitor student placement experiences. A Clinical Portfolio was implemented to improve monitoring processes and enable dynamic responses to potentially altered student learning experiences as COVID-19 public health measures evolved. In doing so, the aim of this study was to evaluate the impact of COVID-19 on physiotherapy student placements between May and June 2020 through examining client case-mix, demographics and learning model documented in each student’s Clinical Portfolio. These data sets allowed for comparison of learning model and case-mix during the pandemic with previous literature monitoring typical physiotherapy clinical placement experience, and providing support for ensuring the registration of the cohort impacted. 

Effects of Bromacil, Malathion and Thiabendazole on Cyanobacteria Mat Growth

Corresponding author: Yasser El-Nahhal Tel: +97282822131 Citation: El-Nahhal Y, El-Hams S. Effects of Bromacil, Malathion and Thiabendazole on Cyanobacteria Mat Growth. Int J Appl Sci Res Rev. 2017, 4:1. Application of pesticides creates many environmental problems and exposes the non-target organisms to health risks. This study aimed to determine the effects of Bromacil, Thiabendazole, and Malathion to cyanobacterial mats growth. Effects were measured as population growth reduction and metabolic activity changes. Cyanobacteria mats showed four growth phases under laboratory condition indicating adaptation and normal growth. Significant growth reduction in treatments containing Bromacil and Thiabendazole were observed, whereas treatments containing Malathion showed increased population growth to cyanobacteria. Ammonium production was severely reduced in treatments containing Bromacil and Thiabendazole, whereas treatment containing Malathion had no effect on ammonium production. Mixtures containing Malathion showed antagonistic effect, whereas mixtures containing Bromacil and Thiabendazole showed increased effect on Electric Conductivity (EC) reduction and pH changes. We concluded that Bromacil and Thiabendazole strongly affect cyanobacterial mats growth; therefore, the ecosystem should be free from them to avoid damage to the cyanobacterial mats