New laboratory techniques using heterodyne receivers

2019 ◽  
Vol 15 (S350) ◽  
pp. 41-45
Author(s):  
Nadine Wehres ◽  
Kirill Borisov ◽  
Katharina von Schoeler ◽  
Patrick Pütz ◽  
Cornelia Honingh ◽  
...  
Keyword(s):  
Complex Molecule ◽  
Absolute Intensity ◽  
Special Focus ◽  
Rotational Spectra ◽  
Laboratory Setup ◽  
Laboratory Techniques ◽  
First Results ◽  
The University ◽  
Ir Astronomy

AbstractTwo laboratory emission spectrometers have been designed and described previously. Here, we present a follow-up study with special focus on absolute intensity calibration of the new SURFER-spectrometer (SUbmillimeter Receiver For Emission spectroscopy of Rotational transitions), operational between 300 and 400 GHz and coincident with ALMA (Atacama Large Millimeter/submillimeter Array) Band 7.Furthermore, we present a feasibility study to extend the detection frequencies up to 2 THz. First results have been obtained using the SOFIA (Stratospheric Observatory for IR Astronomy) upGREAT laboratory setup which is located at the University of Cologne. Pure rotational spectra of the complex molecule vinyl cyanide have been obtained and are used to give an estimate on the sensitivity to record ro-vibrational transitions of molecules with astrophysical importance at 2 THz.

scholarly journals Peer Learning Project for Teachers

2019 ◽  
Vol 28 (10) ◽  
pp. 128-139
Author(s):  
D. A. Mezentceva ◽  
E. S. Dzhavlakh ◽  
O. V. Eliseeva ◽  
A. Sh. Bagautdinova
Keyword(s):  
Professional Practice ◽  
Informal Education ◽  
Peer Learning ◽  
Educational Technologies ◽  
Special Focus ◽  
Institutions Of Higher Education ◽  
Current State ◽  
Key Characteristics ◽  
First Results ◽  
The University

The paper deals with the issue of the faculty development at ITMO University by means of informal education in the context of implementation of new educational technologies in Russian institutions of higher education. The project team of the University designed and implemented a peer learning project which enables educators to share their experiences with technology and train each other to use new tools, methods, and techniques in their professional practice. The article describes the first results of the ITMO.EXPERT project, provides the analysis of its current state, and proposes measures for improving the efficiency of the project. The special focus in the paper is made on the analysis of such aspects of the ITMO.EXPERT project as the competencies that the participants are supposed to develop; the key characteristics of the target audience of the project that should be taken into consideration when planning improvements; the structure of a single workshop and the structure of the whole project.

scholarly journals Serological follow-up of Trypanosoma cruzi infection from 1987 to 1994 in 32 counties of the State of Jalisco, Mexico: preliminary report

1995 ◽  
Vol 11 (3) ◽  
pp. 501-505
Author(s):  
Francisco Trujillo-Contreras ◽  
Maria Angeles V. Yerenas
Keyword(s):  
Immune Response ◽  
South America ◽  
Trypanosoma Cruzi ◽  
Preliminary Report ◽  
The State ◽  
Laboratory Techniques ◽  
The University ◽  
Mexican Strains ◽  
Cruzi Infection

In 1987 the University of Guadalajara performed a seroepidemiological survey on the prevalence of Chagas’ disease in the 124 counties of the State of Jalisco, Mexico, arriving at a rate of 21.6 per 100 inhabitants. From December 1993 to June 1994, we studied 2238 individuals from 32 rural counties in this State. Of these, we found 276 positives (12.33%) and 1962 negatives (87.66%). Nevertheless, the series of serological differences found are very striking, since out of the 655 individuals that were seropositive in 1987, we noted that 276 individuals remained positive, while 50 individuals (7.63%) became negative. There were no flaws in the laboratory techniques. We believe that either the immune response of Mexicans is different or that the virulence of the Mexican strains of Trypanosoma cruzi may be not as great as that in the South America countries.

Prospective evaluation for gastrointestinal bleedings at the University Hospital St. Pölten – one year of follow-up

2019 ◽  
Author(s):  
M Stättermayer ◽  
F Riedl ◽  
S Bernhofer ◽  
A Stättermayer ◽  
A Mayer ◽  
...  
Keyword(s):  
University Hospital ◽  
Prospective Evaluation ◽  
One Year ◽  
The University

New evidence of metallurgical production during the Ptolemaic period in the ancient harbor of Berenike (Eastern Desert) in Egypt

2020 ◽  
Author(s):  
Joan Oller Guzmán
Keyword(s):  
Eastern Desert ◽  
Roman Period ◽  
Special Focus ◽  
Hellenistic Period ◽  
Metallurgical Furnace ◽  
Metallurgical Production ◽  
First Results ◽  
Southwestern Area ◽  
Productive Structure ◽  
New Evidence

This paper tries to explain the first results obtained on trench 102, located on the southwestern area of the ancient harbour of Berenike. Chronologically the trench runs from the Late Hellenistic to Roman Period, showing different uses of this area during Antiquity. Some of the data recovered are quite interesting in order to understand the evolution of this scarcely known area of Berenike’s harbor. The identification of a metallurgical furnace related to the Late Hellenistic Period is especially remarkable, as it provides some insights about the structure of this zone under the last Ptolemaic rulers. So, the main objective of the paper is to offer new data about the productive structure of this site during the Ptolemaic period with special focus on the metallurgical production.

Socioeconomic patient benefits of a pediatric neurosurgery telemedicine clinic

2020 ◽  
Vol 25 (2) ◽  
pp. 204-208 ◽  
Author(s):  
Kelsey Hayward ◽  
Sabrina H. Han ◽  
Alexander Simko ◽  
Hector E. James ◽  
Philipp R. Aldana
Keyword(s):  
Travel Time ◽  
Cost Savings ◽  
Transportation Cost ◽  
Pediatric Neurosurgery ◽  
University Of Florida ◽  
Remote Location ◽  
Socioeconomic Data ◽  
The University ◽  
Time Away

OBJECTIVEThe objective of this study was to examine the socioeconomic benefits to the patients and families attending a regional pediatric neurosurgery telemedicine clinic (PNTMC).METHODSA PNTMC was organized by the Division of Pediatric Neurosurgery of the University of Florida College of Medicine–Jacksonville based at Wolfson Children’s Hospital and by the Children’s Medical Services (CMS) to service the Southeast Georgia Health District. Monthly clinics are held with the CMS nursing personnel at the remote location. A retrospective review of the clinic population was performed, socioeconomic data were extracted, and cost savings were calculated.RESULTSClinic visits from August 2011 through January 2017 were reviewed. Fifty-five patients were seen in a total of 268 initial and follow-up PNTMC appointments. The average round-trip distance for a family from home to the University of Florida Pediatric Neurosurgery (Jacksonville) clinic location versus the PNTMC remote location was 190 versus 56 miles, respectively. The families saved an average of 2.5 hours of travel time and 134 miles of travel distance per visit. The average transportation cost savings for all visits per family and for all families was $180 and $9711, respectively. The average lost work cost savings for all visits per family and for all families was $43 and $2337, respectively. The combined transportation and work cost savings for all visits totaled $223 per family and $12,048 for all families. Average savings of $0.68/mile and $48.50/visit in utilizing the PNTMC were calculated.CONCLUSIONSManaging pediatric neurosurgery patients and their families via telemedicine is feasible and saves families substantial travel time, travel cost, and time away from work.

Creation of physiologic rhythm by closed loop stimulation in heart failure patients with severe chronotropic incompetence: worldwide first results of a pilot study

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
J Proff ◽  
B Merkely ◽  
R Papp ◽  
C Lenz ◽  
P.J Nordbeck ◽  
...  
Keyword(s):  
Heart Rate ◽  
Closed Loop ◽  
Funding Source ◽  
Chronotropic Incompetence ◽  
First Results ◽  
The Mean ◽  
Group 2 ◽  
Group 1

Abstract Background The prevalence of chronotropic incompetence (CI) in heart failure (HF) population is high and negatively impacts prognosis. In HF patients with an implanted cardiac resynchronisation therapy (CRT) device and severe CI, the effect of rate adaptive pacing on patient outcomes is unclear. Closed loop stimulation (CLS) based on cardiac impedance measurement may be an optimal method of heart rate adaptation according to metabolic need in HF patients with severe CI. Purpose This is the first study evaluating the effect of CLS on the established prognostic parameters assessed by the cardio-pulmonary exercise (CPX) testing and on quality of life (QoL) of the patients. Methods A randomised, controlled, double-blind and crossover pilot study has been performed in CRT patients with severe CI defined as the inability to achieve 70% of the age-predicted maximum heart rate (APMHR). After baseline assessment, patients were randomised to either DDD-CLS pacing (group 1) or DDD pacing at 40 bpm (group 2) for a 1-month period, followed by crossover for another month. At baseline and at 1- and 2-month follow-ups, a CPX was performed and QoL was assessed using the EQ-5D-5L questionnaire. The main endpoints were the effect of CLS on ventilatory efficiency (VE) slope (evaluated by an independent CPX expert), the responder rate defined as an improvement (decrease) of the VE slope by at least 5%, percentage of maximal predicted heart rate reserve (HRR) achieved, and QoL. Results Of the 36 patients enrolled in the study, 20 fulfilled the criterion for severe CI and entered the study follow-up (mean age 68.9±7.4 years, 70% men, LVEF=41.8±9.3%, 40%/60% NYHA class II/III). Full baseline and follow-up datasets were obtained in 17 patients. The mean VE slope and HRR at baseline were 34.4±4.4 and 49.6±23.8%, respectively, in group 1 (n=7) and 34.5±12.2 and 54.2±16.1% in group 2 (n=10). After completing the 2-month CPX, the mean difference between DDD-CLS and DDD-40 modes was −2.4±8.3 (group 1) and −1.2±3.5 (group 2) for VE slope, and 17.1±15.5% (group 1) and 8.7±18.8% (group 2) for HRR. Altogether, VE slope improved by −1.8±2.95 (p=0.31) in DDD-CLS versus DDD-40, and HRR improved by 12.9±8.8% (p=0.01). The VE slope decreased by ≥5% in 47% of patients (“responders to CLS”). The mean difference in the QoL between DDD-CLS and DDD-40 was 0.16±0.25 in group 1 and −0.01±0.05 in group 2, resulting in an overall increase by 0.08±0.08 in the DDD-CLS mode (p=0.13). Conclusion First results of the evaluation of the effectiveness of CLS in CRT patients with severe CI revealed that CLS generated an overall positive effect on well-established surrogate parameters for prognosis. About one half of the patients showed CLS response in terms of improved VE slope. In addition, CLS improved quality of life. Further clinical research is needed to identify predictors that can increase the responder rate and to confirm improvement in clinical outcomes. Funding Acknowledgement Type of funding source: Private company. Main funding source(s): Biotronik SE & Co. KG

scholarly journals Maternal and Fetal Outcomes in Women with Brain Arteriovenous Malformation Rupture during Pregnancy

2021 ◽  
pp. 1-7
Author(s):  
Kimberly L. Yan ◽  
Nerissa U. Ko ◽  
Steven W. Hetts ◽  
Shantel Weinsheimer ◽  
Adib A. Abla ◽  
...  
Keyword(s):  
San Francisco ◽  
Treatment Strategies ◽  
First Trimester ◽  
Interventional Treatment ◽  
Maternal Outcomes ◽  
Fetal Outcomes ◽  
Brain Avm ◽  
Risk Of Hemorrhage ◽  
The University

Background: Sporadic brain arteriovenous malformations (BAVM) are a major cause of hemorrhagic stroke in younger persons. Prior studies have reported contradictory results regarding the risk of hemorrhage during pregnancy, and there are no standard guidelines for the management of pregnant women who present with BAVM rupture. The purpose of this study is to describe maternal and fetal outcomes and treatment strategies in patients with BAVM hemorrhage during pregnancy. Methods: We performed a retrospective review of the University of California, San Francisco Brain AVM Project database for female patients who were pregnant at the time of BAVM hemorrhage between 2000 and 2017. Clinical and angiographic characteristics at presentation, BAVM treatment, and maternal outcomes using modified Rankin scale (mRS) score at presentation and 2-year follow-up were recorded. Fetal outcomes were abstracted from medical records and maternal reports. Results: Sixteen patients presented with BAVM hemorrhage during pregnancy, 81% (n = 13) of whom were in their second or third trimester. Three patients (19%) who were in their first trimester terminated or miscarried pregnancy prior to BAVM intervention. Of the remaining 13 patients, 77% (n = 10) received emergent BAVM treatment at time of hemorrhage prior to delivery, and 85% of patients achieved BAVM obliteration and good maternal outcomes (mRS 0–2) at 2-year follow-up. All patients had uncomplicated deliveries (69% cesarean and 23% vaginal) with no reports of postnatal cognitive or developmental delays in infants at 2-year follow-up. Conclusions: Our study shows good long-term maternal and fetal outcomes in ruptured BAVM patients presenting during pregnancy, the majority who received BAVM interventional treatment prior to delivery.

DSSC-Integrated Glassblocks for the Construction of Sustainable Building Envelopes

2014 ◽  
Vol 875-877 ◽  
pp. 629-634 ◽  
Author(s):  
Rossella Corrao ◽  
Dario D'Anna ◽  
Marco Morini ◽  
Luisa Pastore
Keyword(s):  
Energy Efficient ◽  
Light Transmittance ◽  
Building Envelopes ◽  
Sustainable Building ◽  
Building Product ◽  
Building Integrated Photovoltaics ◽  
Pv Systems ◽  
Innovative Solutions ◽  
First Results ◽  
The University

The paper shows the first results of the optical performance analysis carried out on the DSSC integrated glassblock, an innovative building product developed at the Department of Architecture of the University of Palermo. In the field of a research that is being conducted in order to define innovative solutions for the construction of photovoltaic and energy efficient translucent building envelopes, different hypotheses of integration of DSSC into the glassblock have been foreseen. The integration of glassblock with third generation PV systems allows to define a novel building-PV product that meets the current requirements of the BIPV (Building Integrated Photovoltaics) market. By means of OptiCAD® software, several numerical simulations were conducted to analyse the solar factor, the light transmittance and the shading coefficient of the device.

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