scholarly journals Design Of Portable Injection Waste Destruction Machine With Sterilization System

2021 ◽  
Vol 2 (5) ◽  
pp. 1800-1807
Author(s):  
Sandy Suryady ◽  
Eko Aprianto Nugroho ◽  
Abdul Muchlis
Keyword(s):  
Safety Factor ◽  
Theoretical Calculations ◽  
Community Health Center ◽  
Frame Structure ◽  
Injection Equipment ◽  
A Value ◽  
Upper Limit ◽  
Plastic Syringe ◽  
Lower Frame ◽  
Waste Destruction

The Community Health Center (Puskesmas) does not yet have special facilities for treating medical waste such as hospitals. Hospital/Puskesmas waste and waste generated by hospital activities and other supporting activities. Make a machine that destroys waste injection equipment equipped with a knife made of SKD as a plastic syringe destroyer. Design of a syringe crushing machine in the form of needles and syringes, Analyze the von misses stress received by the frame structure of the syringe crusher, Analyze the displacement by the load received by the frame structure of the syringe crusher, Analyze the safety factor of the frame structure of the crusher syringe. Analyzing using solidworks 2016 software, the results obtained are the maximum value of von misses, displacement, and safety of factor from the lower frame of the syringe waste crusher machine. Von misses stress obtained in the analysis using Solidworks 2016 gets a value of 48.54 Mpa in software calculations, while in theoretical calculations it is 48.01 Mpa. The percentage of errors calculated by software and theory is 1%. The displacement obtained in the analysis using Solidworks 2016 software is 0.34 mm in theoretical calculations of 0.35 mm. The percentage of errors calculated by software and theory is 2%. The safety factor obtained in the solidwork analysis gets a value of 4.7 ul (upper limit), while the theoretical calculation is 5.2 ul (upper limit) which means this frame is declared safe when the engine is operating.

scholarly journals Exclusive Breastfeeding Related to Diarrhea Occurrence in Babies Aged 0-6 Months Old at Sudiang Community Health Center, Makassar

2022 ◽  
Vol 3 (1) ◽  
pp. 202-208
Author(s):  
Balqis Dwiyanti Haedar ◽  
Rauly Ramadhani ◽  
Andi Sitti Rahma
Keyword(s):  
Breast Milk ◽  
Community Health ◽  
Health Center ◽  
Exclusive Breastfeeding ◽  
High School Graduates ◽  
Community Health Center ◽  
Cross Sectional ◽  
A Value ◽  
Cross Sectional Design ◽  
The Relationship

Exclusive breastfeeding is a condition in which infants are only given breast milk without the addition of other fluids and foods. until the baby reaches 6 months old. Breast milk strengthen the immune system in infants so they can avoid various diseases including diarrhea. This study aims to determine the relationship between exclusive breastfeeding and the incidence of diarrhea in infants aged 0-6 months in the Sudiang Community Health Center. This research is an analytical survey research with a cross-sectional design. This research was conducted at the Sudiang Health Center, Makassar City in the period November 1st to December 31st, 2019. The total respondents were 89 mothers with babies aged 0-6 months. The results showed that most of the respondents were mothers with male babies (61%), most of the mothers' education was high school graduates (46%), housewives (75%) with low economic background (56%). Exclusive breastfeeding related to the incidence of diarrhea in children aged 0-6 months in the Sudiang Community Health Center with a value of p <0.05 (p = 0.001). In addition, no significant relationship on maternal nipple hygiene to diarrhea in children aged 0-6 months p <0.05 (p = 0.075). In conclusion, this study showed there is a relationship between exclusive breastfeeding and the incidence of diarrhea in children aged 0-6 months in Sudiang Health Center. There is a relationship between hand hygiene and the incidence of diarrhea in children aged 0-6 months in Sudiang Health Center, Makassar.

scholarly journals PENERAPAN MANAJEMEN PROGRAM ODF DI PUSKESMAS SIDOARJO KABUPATEN SIDOARJO TAHUN 2019

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Aisyah Putri Tauladani ◽  
Hadi Suryono ◽  
Setiawan .
Keyword(s):  
Environmental Health ◽  
Health Workers ◽  
Community Health Center ◽  
Program Management ◽  
Cross Sectional ◽  
Performance Targets ◽  
A Value ◽  
Management Function ◽  
Efficient Data ◽  
Level Of Knowledge

Abstract : Management is a process that consists of planning, organizing, implementing, and supervising to achieve goals or objectives effectively in achieving through the implementation of well-implemented and correct and quality, based on the results of situation analysis supported by accurate and efficient data and information as utilize available resources. This study aims to determine the implementation of ODF program management carried out by Puskesmas in order to achieve performance targets in improving the program. This research is a descriptive study with a cross sectional approach. The object of research is the management of the implementation of environmental health programs for villages that have not yet ODF. The subjects of this study were respondents consisting of leaders of the Puskesmas, environmental health workers and other personnel involved in managing environmental health. Data collection techniques were carried out by questionnaires and interviews. The results of the Sidoarjo Community Health Center have been good at implementing the ODF program. The results of the ODF program management function for observation got a value of 85.4% and the interviewee scored 72.5%. The results of recapitulation based on economic level in two villages received a score of 59.09% and 48.03%, for the education level in two villages the scores were 36% and 43%, the level of knowledge of the two villages was 56% and 41%. In conclusion, the results of management at the puskesmas get good results and the results from the community get quite good results. It is recommended for the community to find information about STBM and cooperate with village facilitators and the government.Keywords : Management, ODF Program

Theoretical calculations of hot-spot initiation in explosives

1968 ◽  
Vol 46 (20) ◽  
pp. 3221-3228 ◽  
Author(s):  
H. J. Bruckman Jr. ◽  
J. E. Guillet
Keyword(s):  
Hot Spots ◽  
Arrhenius Equation ◽  
Theoretical Calculations ◽  
Hot Spot ◽  
Chemical Properties ◽  
Balance Equations ◽  
A Value ◽  
Physical And Chemical ◽  
The Heat Balance ◽  
And Chemical Properties

The heat balance equations for the thermal decomposition of hot spots in explosives have been solved using an iterative computer method. This yields a value of Tc, the critical temperature for hot-spot initiation, which is a function of the size and duration of the hot spot and of the physical and chemical properties of the explosive. It is demonstrated that there is a strong correlation between the ranking of explosives in terms of shock sensitivity and their ranking in terms of Tc. In general explosives having low values of Tc are more sensitive to shock and other forms of accidental initiation than those having high values.Using the computer program, it was shown that the major factor affecting Tc was not the energy released in the explosion, but the rate of decomposition, as expressed in terms of the parameters A and Ea in the Arrhenius equation. Consideration of reagent depletion also indicated certain limits beyond which the heat production cannot be maintained for the time necessary to initiate explosion and insensitivity should result. Considerations of this type could be used to predict safe handling procedures for explosives.

scholarly journals Analisis Perancangan Frame Gokart dari Pengaruh Pembebanan dengan Menggunakan CAD Solidworks 2016

Jurnal METTEK ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Angga Restu Pahlawan ◽  
Rizal Hanifi ◽  
Aa Santosa
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Safety Factor ◽  
Frame Structure ◽  
Maximum Displacement ◽  
Element Analysis ◽  
Aisi 1045 ◽  
Steel Aisi ◽  
Simulation Results ◽  
Manual Calculation

Frame adalah salah satu komponen yang sangat penting dalam sebuah kendaraan, yang berfungsi sebagai penopang penumpang, mesin, suspensi, sistem kelistrikan dan lain-lain. Melihat fungsi dari frame sangat penting, maka dalam merancang sebuah frame harus diperhitungkan dengan baik. Banyak sekali jenis pengujian yang sering dipakai dalam perancangan sebuah struktur frame, salah satunya adalah digunakannya metode komputasi dengan menggunakan metode Finite Element Analysis (FEA). Tujuan dari penelitian ini adalah untuk mengetahui distribusi tegangan, regangan, displacement, dan safety factor dari hasil pembebanan statis pada frame gokar. Struktur frame didesain dan dianalisis menggunakan software Solidworks 2016. Material yang digunakan frame adalah baja AISI 1045 hollow tube 273,2 mm, dengan menggunakan pembebanan pengendara sebesar 50 kg dan 70 kg. Hasil dari perhitungan manual didapatkan tegangan maksimum sebesar 4,735  107 N/m2, sedangkan dari simulasi didapatkan sebesar 4,516  107 N/m2. Regangan maksimum didapatkan dari perhitungan manual sebesar 2,310  10-4. Displacement maksimum didapatkan dari perhitungan manual sebesar 1,864  108 mm, sedangkan dari simulasi didapatkan sebesar 1,624  108 mm. Safety factor minimum didapatkan dari perhitungan manual sebesar 11,193, dan perhitungan simulasi didapatkan sebesar 11,736. The frame is one of the most important components in a vehicle, which functions as a support for passengers, engines, suspensions, electrical systems and others. Seeing the function of the frame is very important, so designing a frame must be taken into account well. There are many types of tests that are often used in the design of a frame structure, one of which is the use of computational methods using the Finite Element Analysis (FEA) method. The purpose of this study was to determine the distribution of stress, strain, displacement, and safety factor from the results of static loading on the kart frame. The frame structure was designed and analyzed using Solidworks 2016 software. The material used in the frame is steel AISI 1045 hollow tube 27  3,2 mm, using a rider load of 50 kg and 70 kg. The result of manual calculation shows that the maximum stress is 4,735  107 N/m2, while the simulation results are 4,516  107 N/m2. The maximum strain is obtained from manual calculation of 2,310  10-4. The maximum displacement is obtained from manual calculations of 1,864  108 mm, while the simulation results are 1,624  108 mm. The minimum safety factor obtained from manual calculation is 11,193, and the simulation calculation is 11,736.

STRUCTURAL ANALYSIS OF CARBON COMPOSITE FRAME FOR FOLDABLE ELECTRIC WHEELCHAIR DEVELOPMENT

2019 ◽  
Vol 19 (07) ◽  
pp. 1940045
Author(s):  
WOO SUK CHONG ◽  
MI YEON SHIN ◽  
CHANG HO YU
Keyword(s):  
Structural Analysis ◽  
Compressive Stress ◽  
Safety Factor ◽  
Carbon Composite ◽  
The Body ◽  
Frame Structure ◽  
Structural Safety ◽  
Maximum Displacement ◽  
Electric Wheelchair ◽  
Maximum Variation

Electric wheelchairs developed so far have difficulties for elderly people to use, because of their bulkiness and heavy weight. To address this problem, this study presents a design for the construction of an electric wheelchair with an application of light duty materials at frame and a foldable structure that can be easily loaded in a narrow space. A structural analysis was performed to evaluate the structural safety of the foldable wheelchair. For the purpose of analysis, a carbon composite was used as the material for the frame; Structure Mechanics Module of COMSOL Multiphysics was used as the analysis software; and for the boundary condition, the lower part of the body frame was fixed, and a load of 150[Formula: see text]kg was applied to the upper part of the wheelchair. According to the results of the structural analysis, a maximum displacement of 2.869[Formula: see text]mm occurred at the handle where the carbon composite was applied, and tensile and compressive stress of 103[Formula: see text]MPa and 107.3[Formula: see text]MPa, respectively, were measured at the seat part of the wheelchair where the load was applied. The safety factors were 7.5 and 5.5 for tensile stress and compressive stress, respectively. A maximum variation of 0.0872[Formula: see text]mm occurred at the aluminum wheel shaft, and a maximum variation of 0.2046[Formula: see text]mm occurred at the joint. The maximum stress was 116.3[Formula: see text]MPa that corresponded to a safety factor of 2.66; this indicates that the wheelchair can be considered to be structurally safe as the safety factor exceeds the initial target of 2.

scholarly journals Ibuprofen as a corrosion inhibitor for copper in synthetic acid rain solution

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Zaklina Z. Tasić ◽  
Marija B. Petrović Mihajlović ◽  
Ana T. Simonović ◽  
Milan B. Radovanović ◽  
Milan M. Antonijević
Keyword(s):  
Acid Rain ◽  
Corrosion Inhibitor ◽  
Quantum Chemical ◽  
Corrosion Inhibitors ◽  
Inhibition Efficiency ◽  
Theoretical Calculations ◽  
Pharmaceutical Compounds ◽  
Copper Corrosion ◽  
A Value ◽  
Synthetic Acid

Abstract It is known that if unused drugs are improperly disposed, they can pollute the environment. Furthermore, researchers are still trying to find an environmentally friendly corrosion inhibitor. These factors lead to the possible application of unused pharmaceutical compounds as corrosion inhibitors. The feasibility of an anti-inflammatory, analgesic and antipyretic drug, ibuprofen, was evaluated as a potential copper corrosion inhibitor in synthetic acid rain solution. This investigation was performed by applying electrochemical and weight loss measurements and quantum chemical calculations. The results obtained by these techniques revealed the ability of ibuprofen to protect copper from corrosion. The inhibition efficiency of ibuprofen rises with increase in its concentration and can reach a value of 97.3%. The results of surface analysis of treated coupons by scanning electron microscopy and theoretical calculations are consistent with the experimental results.

scholarly journals Acute myocardial injury is common in patients with COVID-19 and impairs their prognosis

Heart ◽  
2020 ◽  
Vol 106 (15) ◽  
pp. 1154-1159 ◽  
Author(s):  
Jia-Fu Wei ◽  
Fang-Yang Huang ◽  
Tian-Yuan Xiong ◽  
Qi Liu ◽  
Hong Chen ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Disease Severity ◽  
Myocardial Injury ◽  
Troponin T ◽  
High Sensitivity ◽  
Vasoactive Agents ◽  
A Value ◽  
Upper Limit ◽  
Acute Myocardial Injury ◽  
High Sensitivity Troponin T

ObjectiveWe sought to explore the prevalence and immediate clinical implications of acute myocardial injury in a cohort of patients with COVID-19 in a region of China where medical resources are less stressed than in Wuhan (the epicentre of the pandemic).MethodsWe prospectively assessed the medical records, laboratory results, chest CT images and use of medication in a cohort of patients presenting to two designated covid-19 treatment centres in Sichuan, China. Outcomes of interest included death, admission to an intensive care unit (ICU), need for mechanical ventilation, treatment with vasoactive agents and classification of disease severity. Acute myocardial injury was defined by a value of high-sensitivity troponin T (hs-TnT) greater than the normal upper limit.ResultsA total of 101 cases were enrolled from January to 10 March 2020 (average age 49 years, IQR 34–62 years). Acute myocardial injury was present in 15.8% of patients, nearly half of whom had a hs-TnT value fivefold greater than the normal upper limit. Patients with acute myocardial injury were older, with a higher prevalence of pre-existing cardiovascular disease and more likely to require ICU admission (62.5% vs 24.7%, p=0.003), mechanical ventilation (43.5% vs 4.7%, p<0.001) and treatment with vasoactive agents (31.2% vs 0%, p<0.001). Log hs-TnT was associated with disease severity (OR 6.63, 95% CI 2.24 to 19.65), and all of the three deaths occurred in patients with acute myocardial injury.ConclusionAcute myocardial injury is common in patients with COVID-19 and is associated with adverse prognosis.

Action potential propagation in inhomogeneous cardiac tissue: safety factor considerations and ionic mechanism

2000 ◽  
Vol 278 (4) ◽  
pp. H1019-H1029 ◽  
Author(s):  
Yan Wang ◽  
Yoram Rudy
Keyword(s):  
Safety Factor ◽  
Cardiac Tissue ◽  
Sodium Current ◽  
Quantitative Measure ◽  
Tissue Expansion ◽  
Membrane Excitability ◽  
Detailed Model ◽  
A Value ◽  
Unidirectional Block ◽  
Tissue Safety

Heterogeneity of myocardial structure and membrane excitability is accentuated by pathology and remodeling. In this study, a detailed model of the ventricular myocyte in a multicellular fiber was used to compute a location-dependent quantitative measure of conduction (safety factor, SF) and to determine the kinetics and contribution of sodium current ( I Na) and L-type calcium current [ I Ca(L)] during conduction. We obtained the following results. 1) SF decreases sharply for propagation into regions of increased electrical load (tissue expansion, increased gap junction coupling, reduced excitability, hyperkalemia); it can be <1 locally (a value indicating conduction failure) and can recover beyond the transition region to resume propagation. 2) SF and propagation across inhomogeneities involve major contribution from I Ca(L). 3) Modulating I Na or I Ca(L) (by blocking agents or calcium overload) can cause unidirectional block in the inhomogeneous region. 4) Structural inhomogeneity causes local augmentation of I Ca(L) and suppression of I Na in a feedback fashion. 5) Propagation across regions of suppressed I Na is achieved via a I Ca(L)-dependent mechanism. 6) Reduced intercellular coupling can effectively compensate for reduced SF caused by tissue expansion but not by reduced membrane excitability.

scholarly journals The Conical Stones Olive Oil Mill: Analysis through Computer-Aided Engineering

Agriculture ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 255 ◽  
Author(s):  
José Ignacio Rojas-Sola ◽  
Eduardo De la Morena-De la Fuente
Keyword(s):  
Olive Oil ◽  
Computer Aided Engineering ◽  
Operating Conditions ◽  
Frame Structure ◽  
Von Mises Stress ◽  
Maximum Displacement ◽  
Safety Coefficient ◽  
A Value ◽  
Computer Aided ◽  
Von Mises

This article analyzes an olive oil mill formed of four conical stones used in the milling of the olive. To this end, a study of computer-aided engineering (CAE) was carried out using the parametric software Autodesk Inventor Professional, consisting of a static analysis using the finite-element method (FEM) of the three-dimensional (3D) model of the mill under real operating conditions. The results obtained revealed that the conical stones mill was a very robust machine. When studying the assembly in the most unfavorable situation (blockage of one of its millstones), we observed that the element with the highest von Mises stress was the bearing nut, reaching a value of 263.9 MPa, which was far from the elastic limit of cast iron (758 MPa). On the other hand, the machine hardly presented any equivalent deformations or displacements that could jeopardize the operation as a whole. The maximum displacement obtained was 2.494 mm in the inertia flywheel, and the equivalent deformations did not reach 0.1% of the part dimension. Similarly, the element with the lowest safety coefficient (2.87) was the same bearing nut with the highest von Mises stress, although the next element with the second lowest safety coefficient had a value of 8.69, which showed that the set was clearly oversized. These results demonstrate the convenience of redesigning the set in order to resize some of its elements, and that they could have lower safety coefficients of between 2 and 4. After an initial analysis, the resizable elements would fundamentally be those related to the movement transmission system and the frame structure.

The β+ Decay of 234Np and Other Isospin-Forbidden 0+→ 0+ Fermi Transitions

1984 ◽  
Vol 39 (12) ◽  
pp. 1168-1171
Author(s):  
C. T. Yap ◽  
E. L. Saw
Keyword(s):  
Nuclear Matrix ◽  
Coulomb Potential ◽  
Deformation Parameter ◽  
Theoretical Calculations ◽  
Wave Functions ◽  
Matrix Elements ◽  
Β Decay ◽  
A Value ◽  
Experimental Values ◽  
Good Agreement

Although experimental values of the Fermi nuclear matrix elements vary widely from about 1 × 10-3 to 40 × 10-3 for isospin-forbidden 0+→0+ β transitions, theoretical calculations using the Coulomb potential and Nilsson wave functions yielded values of MF in reasonably good agreement, except that of 234Np. However, our calculation of MF for this decay as a function of the deformation parameter β yielded a value of MF in good agreement with experiment for values of β between 0.1 and 0.2.

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