Length spectra and degeneration of flat metrics

In this paper we consider flat metrics (semi-translation structures) on surfaces of finite type. There are two main results. The first is a complete description of when a set of simple closed curves is spectrally rigid, that is, when the length vector determines a metric among the class of flat metrics. Secondly, we give an embedding into the space of geodesic currents and use this to get a boundary for the space of flat metrics. The geometric interpretation is that flat metrics degenerate to "mixed structures" on the surface: part flat metric and part measured foliation.Comment: 36 page

How genomic information is accessed in clinical practice: an electronic survey of UK general practitioners.

Genomic technologies are having an increasing impact across medicine, including primary care. To enable their wider adoption and realize their potential, education of primary health-care practitioners will be required. To enable the development of such resources, understanding where GPs currently access genomic information is needed. One-hundred fifty-nine UK GPs completed the survey in response to an open invitation, between September 2017 and September 2018. Questions were in response to 4 clinical genomic scenarios, with further questions exploring resources used for rare disease patients, direct-to-consumer genetic testing and collecting a family history. Respondents were most commonly GP principals (independent GPs who own their clinic) (64.8%), aged 35-49 years (54%), worked as a GP for more than 15 years (44%) and practiced within suburban locations (typically wealthier) (50.3%). The most popular 'just in time' education source for all clinical genomic scenarios were online primary care focussed resources with general Internet search engines also popular. For genomic continuous medical education, over 70% of respondents preferred online learning. Considering specific scenarios, local guidelines were a popular resource for the familial breast cancer scenario. A large proportion (41%) had not heard of Genomics England's 100,000 genome project. Few respondents (4%) would access rare disease specific Internet resources (Orphanet, OMIM). Twenty-five percent of respondents were unsure how to respond to a direct-to-consumer commercial genetic test query, with 41% forwarding such queries to local genetic services. GPs require concise, relevant, primary care focussed resources in trusted and familiar online repositories of information. Inadequate genetic education of GPs could increase burden on local genetic services

Weak Kaon Production off the Nucleon

The weak kaon production off the nucleon induced by neutrinos is studied at the low and intermediate energies of interest for some ongoing and future neutrino oscillation experiments. This process is also potentially important for the analysis of proton decay experiments. We develop a microscopical model based on the SU(3) chiral Lagrangians. The basic parameters of the model are fpi, the pion decay constant, Cabibbo's angle, the proton and neutron magnetic moments and the axial vector coupling constants for the baryons octet, D and F, that are obtained from the analysis of the semileptonic decays of neutron and hyperons. The studied mechanisms are the main source of kaon production for neutrino energies up to 1.2 to 1.5 GeV for the various channels and the cross sections are large enough to be amenable to be measured by experiments such as Minerva and T2K

Morbidly Obese Woman Unaware of Pregnancy until Full-Term and Complicated by Intraamniotic Sepsis with Pseudomonas

A 32-year-old Caucasian woman of body mass index (BMI) 46 presented with urinary symptoms to accident and emergency (A&E). Acute pyelonephritis was the diagnosis. Transabdominal scan revealed a live term fetus. Both the partners were unaware of the ongoing pregnancy until diagnosed. She underwent emergency cesarean under general anaesthesia (GA) for nonreassuring CTG, severe chorioamnionitis, and moderate preecclampsia. A live male baby weighing 4400 grams delivered in poor condition. Placental tissue on culture exhibited scanty growth of pseudomonas aeruginosa. Chorioamnionitis due to pseudomonas is rare, with high neonatal morbidity and mortality. It is mostly reported among preterm prelabor rupture of membranes (PPROM). Educating the community especially morbidly obese women if they put on excessive weight or with irregular periods should seek doctor's advice and exclude pregnancy. For the primary care provider, it is of great importance to exclude pregnancy in any reproductive woman presenting with abdominal complaints. This case also brings to clinicians notice that pseudomonas can be community-acquired and can affect term pregnancies with intact or prolonged rupture of membranes

Weak Production of Strange Particles and η\eta Mesons off the Nucleon

The strange particle production induced by (anti)neutrino off nucleon has been studied for $|\Delta S|=0$ and $|\Delta S|=1$ channels. The reactions those we have considered are for the production of single kaon/antikaon, eta and associated particle production processes. We have developed a microscopical model based on the SU(3) chiral Lagrangian. The basic parameters of the model are $f_\pi$, the pion decay constant, Cabibbo angle, the proton and neutron magnetic moments and the axial vector coupling constants for the baryons octet. For antikaon production we have also included $\Sigma^*$(1385) resonance and for eta production $S_{11}$(1535) and $S_{11}$(1650) resonances are included.Comment: To appear in AIP Conf. Proc. of the Workshop CETUP*14, 12 Pages, 13 Figure

Antineutrino induced antikaon production off the nucleon

The charged current antikaon production off nucleons induced by antineutrinos is studied at low and intermediate energies. We extend here our previous calculation on kaon production induced by neutrinos. We have developed a microscopic model that starts from the SU(3) chiral Lagrangians and includes background terms and the resonant mechanisms associated to the lowest lying resonance in the channel, namely, the Sigma*(1385). Our results could be of interest for the background estimation of various neutrino oscillation experiments like MiniBooNE and SuperK. They can also be helpful for the planned antineutrino experiments like MINERvA, NOvA and T2K phase II and for beta-beam experiments with antineutrino energies around 1 GeV.Comment: 15 pages and 6 figures. This version matches accepted version for publication in Physical Review

Review of Hussain Sagar Lake Pollution, Hyderabad, India

Hussain sagar lake, a historical lake which was built in 1562 by Hussain Shaw Wali is situated in the heart of Hyderabad city, India. Earlier up to 1930's, it was the major water source to meet drinking and irrigation requirements for both twin cities of Hyderabad and Secunderabad. Now this lake turned to virtual garbage bin with no adequate treatment for wastewater loads originated from point and non point sources. Therefore the lake loses the capability of self purification system which was an important factor that depends on the maximum uptake of oxygen from the atmosphere. Multiple projects were undertaken by the concerned authorities for the improvement of Hussain sagar lake and its catchment area. Recently With referring to the Lake health status, In 2006, HMDA, a governing body set up by Andhra Pradesh Government, initiated “Hussainsagar Lake and Catchment Area Improvement project” and set up STPs and wastewater interception and diversion structures. It also installed fountains to aerate the lake to improve its water quality as well as to add beauty. But these measures are lying ineffective to manage wastewater loads. This paper discusses that the Hussain Sagar lake water body over decades, has been polluted adversely from discharging of organic and inorganic pollutants through open drains as well as point and non point sources and also presents various measures had taken to rejuvenate Hussain Sagar Lake to its past glory

Smart Voltage-Source Inverters with a Novel Approach to Enhance Neutral-Current Compensation

© 1982-2012 IEEE. The presence of a neutral current is quite common in three-phase (3P) four-wire (4W) distribution systems due to an unequal distribution of linear and nonlinear single-phase (1P) loads and small distributed generators. However, a high neutral current can overload the neutral conductor and distribution transformer, which can cause electrical safety concerns and even fire. Among several existing neutral current compensators, the 3P four-leg (4L) voltage-source inverter (VSI) provides better control flexibility and more efficient performance than the passive compensators but requires a higher VSI capacity for the fourth-leg operation. To provide a solution to the aforementioned problem, this paper presents a novel control method to utilize the available capacity of a 3P-4L VSI after active and reactive power regulation to enhance the neutral-current compensation. A smart VSI (SVSI) is designed to operate with a solar photovoltaic unit, regulate the ac side voltage, and minimize the neutral current. Case studies are conducted with actual load data from a commercial building in the PSCAD/EMTDC software environment. The designed system with the proposed control method can provide a significant improvement in the neutral-current compensation, phase balancing, and unbalance factor compared to a fixed-capacity 3P-4L SVSI. Experimental results using a TMS320F28335 digital signal processor microcontroller and modified Semiteach 3P-4L inverter are presented to verify the robustness of the designed controller and the enhancement to the neutral-current compensation using the proposed dynamic capacity-control method