PERENCANAAN HOTEL KONSTRUKSI BETON BERTULANG 12 LANTAI DI JLN. AHMAD YANI KOTA MANADO

Perencanaan struktur gedung bertingkat mengandung pengertian perencanaan elemen - elemen struktur gedung seperti plat lantai, tangga, portal balok kolom dan pondasi untuk menahan seluruh beban-beban yang bekerja. Oleh karena itu, seorang perancang gedung harus memilih sistem struktur yang paling tepat yaitu apakah elastik penuh, daktail parsial atau daktail penuh.Struktur gedung Hotel di Jln Ahmad Yani ini didasarkan pada standar peraturan - peraturan gedung Indonesia. Analisis struktur menggunakan software ETABS Ultimate 17.0.1. Analisis gempa menggunakan analisis dinamik respon spektrum dengan nilai SDS dan SD1 di kota manado adalah sebesar 0.747 dan 0.464. Jenis tanah yang dikategorikan berdasarkan jenis tanah adalah jenis tanah sedang. Struktur gedung hotel terdiri dari 12 lantai dengan lantai pertama sampai dengan keempat adalah sama dan lantai kelima sampai dengan keduabelas juga sama. Beban - beban yang bekerja pada gedung berupa beban mati, beban hidup, beban gempa, dan beban tambahan lainnya yang nantinya pada perhitungan pembebanan mengacu pada SNI 1727-2013 tentang “Beban minimum untuk perancangan bangunan gedung dan struktur lain”. Beban Gempa akan mengacu pada SNI 1726-2012 tentang “Tata cara perencanaan ketahanan gempa untuk struktur bangunan gedung dan non-gedung”. Gaya-gaya dalam yang diperoleh dari output ETABS  digunakan untuk menghitung jumlah kebutuhan tulangan yang dibutuhkan oleh struktur bangunan. Hasil yang diperoleh dari perencanaan menunjukkan bahwa hasil perencanaan yang digunakan pada gedung Hotel di Jln Ahmad Yani mampu memikul beban-beban yang bekerja di dalam analisis. Kata Kunci : ETABS, Gedung Bertingkat, Hotel, Beton Bertulan

The Theory of Caustics and Wavefront Singularities with Physical Applications

This is intended as an introduction to and review of the work of V, Arnold and his collaborators on the theory of Lagrangian and Legendrian submanifolds and their associated maps. The theory is illustrated by applications to Hamilton-Jacobi theory and the eikonal equation, with an emphasis on null surfaces and wavefronts and their associated caustics and singularities.Comment: Figs. not include

Composition of uroliths in a tertiary hospital in South East Nigeria

Background: Urolithiasis affects primarily the urinary tract and complications as debilitating as renal failure may develop. Determining the chemical composition of uroliths can aid management and prevention of recurrence in patients.Objective: To determine the chemical composition and anatomical distribution of uroliths in Nigeria.Methods: This descriptive cross-sectional study was conducted between March 2014 and February 2016, in a tertiary hospital in Nigeria. We reviewed the outcomes of uroliths of adult patients sent to our laboratory for chemical analyses. Samples were analyzed using simple qualitative tests.Results: 52 adult patients were included with a mean age (SD) of 46.6 (12.6) years. Males (76.9%) were more affected than females (23.1%). For both sexes, highest occurrence of stones was in bladder (85.7%). Calcium-containing stones had the highest occurrence (85.2%) and predominated in the renal, ureter and urethra, followed by struvite stones (59.5%). In the bladder, struvite stones were predominant (85.8%), with calcium-containing stones accounting for 71.4%.Conclusion: This study showed that struvite and calcium phosphate-containing stones constitute majority of uroliths in our setting with low occurrence of calcium oxalate stones. This indicates that urinary tract infection most likely plays a substantial role in the formation of uroliths in Nigerians. Modern methods of stone analysis is advocated to further define management options.Keywords: Uroliths, calcium oxalate, chemical composition, struvite, stone, calculi

An Analysis of the Strayton Engine, a Brayton and Stirling Cycle Recuperating Engine

This paper explores the novel Strayton engine concept. This engine combines the cycles of a Brayton engine with that of a Stirling engine to create a highly efficient recuperating gas turbine engine. In the explored case, both Brayton cycle and Stirling cycle engines are used to generate electrical power. Additionally, the Stirling engine is used to draw heat out of the Brayton turbine (acting to cool the turbine blades), while also pumping heat into Brayton cycle just before combustion occurs (acting as the mechanism for recuperation). The purpose of this paper is to detail the system level modeling techniques used to generate the simulation, perform a cycle analysis of the combined cycle engine, identify key technologies and challenges associated with the concept, and compare potential performance gains with existing gas turbine engines and internal combustion engines. Topics such as controls, blade cooling effects, engine weight, and heat transfer using heat pipe are also explored. Results from this work show potential architectures that could provide the required heat transfer rates, potential control strategies, and performance benefits, including efficiency gains between 10% and 3% on engines ranging from 200HP to 670HP with the combined cycle engine

Information needs and constraints of access to educational information in the Fort Beaufort Education District

Types of educational information needed by learners, their level of access and librarians’ supportive roles in learning are pertinent to the attainment of quality education. This study seeks to identify the types of educational information needed by high school learners and the barriers of access. The study is underpinned by the jurisprudential theory of freedom of speech augmented by the theory of access to establish the reality of access. The study adopted a mixed methods approach to obtain data from 331 grade 12 learners, 29 teachers and 3 librarians. The findings reveal that information on requirements for admission into university, subjects taught at school, and career guidance were the most needed by learners. Access challenges include inadequate information resources and the absence of and/or non-functional school libraries. Recommendations include the adequate provision of educational information, information literacy education, employment of qualified librarians by education authorities as well as provision of functional school libraries and information technology tools. The study has shown a need to further examine, in a more rigorous way, the coping strategies of teachers and learners in information-poor communities.Keywords: educational information; high school learners; information access; information literacy education; information needs; information resources; information technology tools; school librarie

Analyzing the air mask fit for bearded commercial airline pilots.

There is a widespread belief that facial hair reduces the effective seal of airline pilots\u27 oxygen masks, thereby decreasing protection from hypoxia during emergencies like rapid decompression. Many airlines argue that beards prevent pilots from safely controlling the aircraft and have instituted policies banning them, although the FAA leaves this up to individual airlines while also claiming mask effectiveness could be impaired by facial hair. A group of commercial pilots funded a study at the College of Aviation High Altitude Lab (HAL) to assess the effectiveness of standard masks during simulated exposure to 30,000 ft altitude. The participants, pilots and students, were divided into three groups of eight: long beards (\u3e3 cm), short beards (cm), and clean-shaven. All wore pulse oximeters continuously recording oxygen saturation and heart rate. With masks on for 10 minutes at around an altitude of 30,000ft, no leaks were evident from the oximeter readings. Masks were then removed for about 5 minutes to confirm the oximeters could detect hypoxia levels. The masks were quickly worn for another 10 minutes to demonstrate the absence of detected leaks. Ammonium salts waved underneath the masks could not be smelled, demonstrating the masks\u27 seals were tight enough to prevent chemical exposure. The study found no evidence that facial hair caused mask leaks, hypoxia, or chemicals to affect performance

Risk factors for delay in age-appropriate vaccinations among Gambian children.

BACKGROUND: Vaccination has been shown to reduce mortality and morbidity due to vaccine-preventable diseases. However, these diseases are still responsible for majority of childhood deaths worldwide especially in the developing countries. This may be due to low vaccine coverage or delay in receipt of age-appropriate vaccines. We studied the timeliness of routine vaccinations among children aged 12-59 months attending infant welfare clinics in semi-urban areas of The Gambia, a country with high vaccine coverage. METHODS: A cross-sectional survey was conducted in four health centres in the Western Region of the Gambia. Vaccination dates were obtained from health cards and timeliness assessed based on the recommended age ranges for BCG (birth-8 weeks), Diphtheria-Pertussis-Tetanus (6 weeks-4 months; 10 weeks-5 months; 14 weeks-6 months) and measles vaccines (38 weeks-12 months). Risk factors for delay in age-appropriate vaccinations were determined using logistic regression. Analysis was limited to BCG, third dose of Diphtheria-Pertussis -Tetanus (DPT3) and measles vaccines. RESULTS: Vaccination records of 1154 children were studied. Overall, 63.3% (95 % CI 60.6-66.1%) of the children had a delay in the recommended time to receiving at least one of the studied vaccines. The proportion of children with delayed vaccinations increased from BCG [5.8% (95 % CI 4.5-7.0%)] to DPT3 [60.4% (95 % CI 57.9%-63.0%)] but was comparatively low for the measles vaccine [10.8% (95 % CI 9.1%-12.5%)]. Mothers of affected children gave reasons for the delay, and their profile correlated with type of occupation, place of birth and mode of transportation to the health facilities. CONCLUSION: Despite high vaccination coverage reported in The Gambia, a significant proportion of the children's vaccines were delayed for reasons related to health services as well as profile of mothers. These findings are likely to obtain in several countries and should be addressed by programme managers in order to improve and optimize the impact of the immunization coverage rates

UMass Amherst Green Building Guidelines 2013

Facilities & Campus Services, Sustainable UMass and Campus Planning support sustainability and energy conservation initiatives by providing in-house resources to campus staff as well as designers and contractors working with the University. The UMass Amherst Green Building Guidelines provide a framework for approaching new construction and major renovation projects at UMass Amherst that are undergoing LEED certification by focusing the conversation on green building aspects that are most important to the campus. They are intended to be the beginning of a dynamic conversation between designers, environmental consultants and constructors, university stakeholders, and users of new high performance buildings

Image distortion in non perturbative gravitational lensing

We introduce the idea of {\it shape parameters} to describe the shape of the pencil of rays connecting an observer with a source lying on his past lightcone. On the basis of these shape parameters, we discuss a setting of image distortion in a generic (exact) spacetime, in the form of three {\it distortion parameters}. The fundamental tool in our discussion is the use of geodesic deviation fields along a null geodesic to study how source shapes are propagated and distorted on the path to an observer. We illustrate this non-perturbative treatment of image distortion in the case of lensing by a Schwarzschild black hole. We conclude by showing that there is a non-perturbative generalization of the use of Fermat's principle in lensing in the thin-lens approximation.Comment: 22 pages, 6 figures, to appear in Phys. Rev. D (January 2001

Paediatric brought-in-dead at a tertiary health facility in South western Nigeria: Patterns and drivers

Background: ‘Brought- in-dead’ (BID) refers to the demise of an individual before presentation to a health facility. This study assessed the pattern of paediatric BID cases seen at a tertiary health facility in southwest Nigeria. Method: A cross-sectional, descriptive study was done at the Children Emergency Ward (CEW) of the hospital between January 2014 and December 2018. The patterns of BID cases and presumed causes of death were determined using a standardized checklist adapted from the WHO verbal autopsy instrument. Results: Ninety-eight BID cases were seen during the study, constituting 2.5% of total patients seen during the period. The median (IQR) age of cases was 24.0 (8.75 – 63.0) months and 72.4% were under-fives. Most had symptoms related to the haematologic (36.7%), respiratory (24.5%) or digestive (20.4%) systems. Severe anaemia 31(31.6%), gastroenteritis 19 (19.4) and aspiration 17 (17.3%) were the most common causes of death. The median (IQR) duration of illness before presentation was 3.0 (1.0 – 7.0) days but most presented from 4 – 7 days of illness. A significant relationship was found between the duration of illness and whether or not pre-hospital treatment was received (p < 0.0001). Unprescribed drugs purchased over the counter were the most commonly used treatment in 79.1% of cases (p < 0.0001). Conclusion: This study has highlighted the prevalence and pattern of paediatric BID in a tertiary health facility in southwest Nigeria and the factors that were associated with it. More efforts need to be geared towards community sensitization and pediatric health care to prevent factors drivingits menace