Good Cleanliness Research Articles

Sanitary Hygiene Practices and Escherichia coli Contamination in Snack Food at Elementary School Canteens in Nganjuk District

Snacks served at schools that are contaminated with Escherichia coli germs run the risk of harming students' health. The World Health Organization states that around 70% of diarrheal disease cases are caused by food contaminated with Escherichia coli. Escherichia coli contamination in school snacks can be influenced by a lack of hygiene and sanitation aspects. This investigation aimed to establish a connection between good cleanliness habits and an E. coli infection in the cafeteria food at Nganjuk District's primary schools. This kind of study has an observational design and a cross-sectional study plan. The research sample consisted of 12 canteens selected through purposive sampling. Data collection methods included observation, interviews, and laboratory tests, followed by univariate analysis with descriptive statistics and bivariate analysis with Fisher's exact test. Laboratory test results explained that of the 12 samples, there were 5 (41.7%) foods contaminated with Escherichia coli. The outcomes demonstrated a link between the handler's hygiene (p = 0.015), sanitation of equipment (p = 0.028), serving process (p = 0.010), peddler facilities (p = 0.045), and Escherichia coli contamination. While the quality of food ingredients (p = 0.222) and TPM sanitation (p = 1.000) do not correlate with Escherichia coli contamination, It can be concluded that personal hygiene of the handler, sanitation of tools, serving process, and poor peddling facilities can increase the contamination of hawker food by Escherichia coli bacteria.

Fluoroquinolones: Action, Synthesis and Applications in Antimicrobial Therapy

Abstract: In the late nineteenth century, diseases were assumed to be linked to the presence of microbes. The mortality rate dropped after the antiseptic approach was used. Good cleanliness and sanitation helped to drastically cut the death rate from infectious diseases. Antimicrobials were produced, and numerous pathogenic diseases were eradicated. Essential antibacterial drugs that are frequently utilized in clinical therapies include fluoroquinolones. Their synthetic pathway, action and therapeutic uses are described in this review. Their primary mechanism of action is the inhibition of bacterial DNA gyrase and topoisomerase IV, which are essential enzymes involved in transcription and DNA replication. Fluorination is one of the important structural change that improves their efficacy and spectrum of activity against a variety of infections. To enhance pharmacokinetics, substituent modification, fluorination, and cyclization of heterocycles are used in synthesis. Advances in synthetic chemistry have produced compounds that exhibit increased activity and decreased resistance. Clinical applications include treating respiratory, urinary tract, cutaneous, and gastrointestinal diseases. These drugs also show activity like antitumor, wound healing, antimycobacterial, etc. This review aims to provide researchers and academicians a brief account about the bacterial action, synthesis and clinical applications in antimicrobial therapy.

Myasthenia gravis in current status: epidemiology, types, etiology, pathophysiology, symptoms, diagnostic tests, prevention, treatment, and complications - correspondence.

Myasthenia gravis in current status: epidemiology, types, etiology, pathophysiology, symptoms, diagnostic tests, prevention, treatment, and complications - correspondence.

Knowledge, attitude, and practices of adolescent school girls regarding menstrual hygiene in Lucknow district

Background: Girls’ adolescence has been recognized as a unique period that occurs as they cross the threshold from childhood to adulthood. Menstruation is typically viewed in Indian society as unclean. A negative attitude about this condition has been perpetuated by efforts to isolate and restrict menstruation females in the household. Numerous investigations have discovered restrictions in daily activities. On the other hand, maintaining good cleanliness habits during menstruation is important for reproductive health since it reduces vulnerability to infections of the reproductive tract. Aims and Objectives: The aim of the study was to assess knowledge and attitude about menstrual health among adolescent girls in rural and urban schools in Lucknow district and to find out practices of menstrual hygiene among them. Materials and Methods: The study unit consists of 410 teenage school-going females who live in both urban and rural regions of the Lucknow district. There was a multi-stage random sampling. A pre-developed and pre-tested interview schedule was employed toobtain data. Participants were questioned about their personal cleanliness, which need to be covered in the academic program. Results: Four hundred and ten adolescent girls who were enrolled in school participated in the study. The majority of girls in this survey (52.8%) are between the ages of 17 and 19. 87.6% of the girls reported being ignorant of menstruation before menarche. While 41.6% of the girls were unaware of the organ from which bleeding originates, around 68.2% of the girls believed that the primary reason of menstruation is physiological and unrelated to any sickness. At the age of 10–13 years, 42.60% of the girls reached menarche. The majority of participants (60.80%) gave accurate responses to the question about the typical menstrual cycle’s average length. Only 35.27% of the girls were aware of the proper menarche age. Of them, 65.50% were aware of the issues with their reproductive health. Conclusion: Lack of education among mothers and other female family members may contribute to girls’ lack of knowledge and awareness of menstruation. Misinformation, pre-conceptions, limitations, and a lack of knowledge around menstruation come in many different forms. As a result, when the entire family is familiar with the phenomena of menstruation, age-old prohibitions, conventional preconceptions, incorrect ideas, and negative attitudes may be successfully erased.

A Review of Research on Emission Characteristics of Ethanol-Diesel Blends in Diesel Engines

This paper reviews research on the emission characteristics of blended ethanol and other fuels. With the rapid development of modern industry, the extensive use of fuel engines has led to increasingly prominent contradictions between energy and the environment. In order to respond to sustainable development and reduce engine emissions in various countries, many scientific research institutions have conducted research on mixed fuels. The research of blended fuel mainly focuses on its sustainability, economy and environmental protection. Compared with gasoline engines, diesel engines have a lower fuel consumption rate and are widely used in heavy industry. But its fuel comes from refining crude oil, which is non-renewable and has poor cleanliness. As an emerging renewable fuel, ethanol is a fuel with good development prospects due to its good cleanliness, wide range of sources and renewable. If ethanol can be used as an alternative fuel for traditional internal combustion engines and diesel engines, it can save some traditional fuels and improve the emission problems of internal combustion engines to a certain extent. This paper introduces the research status of ethanol blended fuels, and the emission characteristics of engines (NOx, HC and CO) under different ethanol ratios and different operating conditions. It can be seen that with the increase of ethanol blending ratio, NOx content will increase, while CO and HC emissions will decrease.

Method for evaluation of the cleanliness grade of coal resources in the Huainan Coalfield, Anhui, China: a case study

Based on analysis of a large data set and supplementary sampling and analysis for hazardous trace elements in coal samples from the Huainan Coalfield, a generalized contrast-weighted scale index method was used to establish a model to evaluate the grade of coal cleanliness and its regional distribution in the main coal seam (No. 13-1) The results showed that: (1) The contents of Cr, Mn and Ni in the coal seam are relatively high and the average values are greater than 20 μg/g. The contents of Se and Hg are at a high level while most other trace elements are at normal levels. (2) The cleanliness grade of the coal seam is mainly grade III–IV, which corresponds to a relatively good-medium coal cleanliness grade. However, some parts of the seam are at grade V (relatively poor coal cleanliness). (3) Coal of relatively good cleanliness grade (grade III) is distributed mainly in the regions corresponding to the Zhuji-Dingji-Gubei coal mines and in the eastern periphery of the Panji coal mine. Coal of medium cleanliness (grade IV) is distributed mainly in the regions of the Panji-Xiejiaji and Kouzidong coalmines. Relatively poor grade coal (grade V) is distributed in the southwest regions of the coalfield and the contents of Cr, As and Hg in coal collected from the relatively poor coal cleanliness regions often exceed the regulatory standards for the maximum concentration limits.

Market Generic Strategy pada Usaha Warkop Angkringan Berbasis Internet (WiFi) di Kab Mojokerto

The purpose of this research is to measure the Market Generic Strategy that is used by the owner of the internet (wifi) coffee shop / UMKM in Mojokerto Regency to be able to compete, be sustainable and achieve goals and get maximum profit. This research is an exploratory research that uses a qualitative approach in the form of a Focus Group Discussion. The sample consisted of 25 people, who were taken based on certain criteria. The technique of collecting data is by conducting open-ended interviews with the hope of obtaining complete information from these respondents. Data analysis using descriptive analysis method. The results showed that the Internet-based Market Generic Strategy of Warkop Angkringan (wifi) is a product differentiation strategy, service differentiation, personnel differentiation and focus strategy. Meanwhile, the way to retain customers is the availability of fast and friendly service, a variety of drinks and food, comfortable seating and room facilities as well as good cleanliness and layout.

Laboratorial Analysis of Inclusions Formed by Reoxidation in Tundish Steelmaking

In order to investigate the formation of inclusions by reoxidation in the tundish, an MgO–CaO gunning mass (GM1), an MgO gunning mass (GM2), a calcium aluminate tundish slag (TS), and a rice husk ash (RHA) silica based are evaluated. The interaction between the steel and these materials is analyzed under laboratory conditions. The experimental results for the chemical composition of steel and the types of inclusions formed satisfactory reach the thermodynamic equilibrium calculated by FactSage. GM1 presents better results for inclusion density and average size of inclusions compared to GM2. The experiment with TS presents a good steel cleanliness despite the formation of numerous alumina inclusions, caused by the reaction between the slag and the alumina crucible. The addition of RHA increases the inclusion density and average size of inclusions, and also the formation of CaO–Al2O3–SiO2 oxides inclusions is favored. RHA has harmful effects concerning reoxidation events, deteriorating the good cleanliness obtained with the TS. The experiments with GM1 and TS are less reoxidative and presents a better steel cleanliness. Thus, the usage of this gunning mass and a calcium aluminate slag without RHA is preferable in order to diminish reoxidation during the tundish steelmaking.

The role of process control on the steel cleanliness

The possibilities of obtaining a good process control in order to reach a good cleanliness of the steel were studied based on plant trials. Steel and slag samples were taken from two steel grades with a slightly different composition, but with similar processing conditions. Thereafter, the chemical compositions of the steel and slag samples were determined. The results show that the sum of the FeO and MnO was found to be a clear indicator for when reoxidation had taken place. No conclusive indicator was found to predict the extent of slag carry-over from the electric arc furnace. However, most of the variation in deoxidation seem to originate from the accuracy of the slag raking. Steel grades with low amounts of deoxidisers such as C and Si naturally were found to result in higher oxygen contents at the start of deoxidation. Furthermore, calculations of oxygen activities in the steel melt were made and the results were compared to measurements with varying results. Overall, the results indicate that calculation of oxygen activities with multivalence slag species such as Fe and Cr requires additional measurements to obtain accurate results.

UGI 4435 IRH

Abstract UGI 4435 IRH is a molybdenum-containing austenitic stainless steel with good cleanliness and polishability. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1173. Producer or source: Schmolz + Bickenbach USA Inc..

Calculated and Experimental Research on Shear Stability of Composite Pavement with Thin Asphalt Concrete Upper Layer

Based on the calculate analysis of shear-resistance stability of various asphalt mixtures for composite pavement with thin asphalt-cement concrete purpose during slow braking and emergency braking and anti-shear sliding stability test between asphalt and cement concrete, the shear resistance, characteristics and damage types of different types of asphalt mixtures in such pavement structure as well as the bond properties between different cement concrete surface cleanliness, strength, roughness and different asphalt binder materials were studied in this paper. The research result not only reveals that AR-AC13 and SMA-13, the broken gradation of modified asphalt with big viscosity and coarse aggregate, are the ideal asphalt mixture of such structure, but also indicates that the cement concrete surface should be clean and dry with good cleanliness as well as certain roughness and strength, and the concrete surface should be roughening treated through transverse groove or milling planer. Furthermore, rubber asphalt is proved to be the interlayer bonding material with ideal performance and price.

Resource Saving by Training – How much can be Saved in Manual Dishwashing?

Abstract Automatic dishwashing has been optimised in manifold ways during the last decades. But it is also necessary to optimise manual dishwashing, because almost every household still washes up at least a few items by hand. A procedure based on an experimental multi-factorial laboratory study was developed to wash up a specified number of dishes with good cleanliness and an optimum water consumption as results. This procedure was then translated into generalised dishwashing tips – called Best Practice Tips. These tips were used to run two comparative consumer laboratory studies: the first part of each study investigated the everyday dishwashing behaviour and resource consumption of consumers. The second part studied the behaviour and the resource consumption after a training on the Best Practice Tips. The comparison showed that with a larger number of dishes, relevant amounts of resources of energy and water can be saved, whereas with a smaller number of dishes, no significant reduction was found. This is possibly due to a different optimum for washing up only a few items.

HYGIENIC AND HEALTH QUALITY OF HOT BEVERAGES DISTRIBUTED BY VENDING MACHINES

The food and beverage vending had in the last 40 years a great development in Italy. From the hygienic and health point of view, the quality of the products distributed by Vending is essentially related to three factors: the quality of raw materials, the quality of tap water and the good working order together with the good cleanliness and hygienic status of equipments. In this work we wanted to test these features. We evaluated microbiological and fungal quality of raw materials (powders), of distributed hot beverages and the used equipments. Despite contamination levels shown by the results of this study, the temperature of the boiler is sufficient to make a significant reduction of bacterial and fungal loads. To obtain satisfactory results on the quality of delivered hot beverages is necessary to apply correct maintenance and cleaning/sanitation procedures of equipments, as well as an appropriate selection of suppliers.

Long-Term Functional Evaluation of Fecal Continence After Laparoscopic-Assisted Pull-Through for High Anorectal Malformations

The use of laparoscopy while performing an abdominal dissection for the mobilization of rectovesical fistula should have an impact on anorectal function, as compared to the original posterior sagittal anorectoplasty, where muscle complex was not cut and the rectum was pulled in a way similar to the old techniques for the abdominoperineal pull-through. This necessitates a functional reevaluation. A prospective case study included 15 patients treated with a laparoscopic-assisted pull-through for high anorectal malformation. Laparoscopy was used for abdominal dissection and ligation of the fistula, with the pull-through completed by a small perineal incision centered over the external sphincter. Nine of them are now older than 3 years for fecal continence evaluation. After the approval of the Ethical Committee for Medical Research in the Department of Surgery at Ain Sams University (Cairo, Egypt) and obtaining an informed consent from the parents, they were subjected to a full clinical history and a checklist about motions and soiling to be filled in over 1 month, a barium enema to check for any dilatation, anorectal manometry to evaluate resting pressure, maximum squeezing pressure, and sphincter relaxation, and MRI (magnetic resonance imaging) to evaluate the central situation of the rectum within the sphincter and the degree of development of the sphincter. Their degree of continence was graded according to the Kelly score. Six of 9 patients are clean without any attacks of fecal soiling or incontinence, and they evacuate spontaneously but need the application of a rectal suppository for evacuation from time to time. The remaining 3 patients had variable degrees of fecal incontinence. One of them had mucosal prolapse and was excised with good cleanliness postoperatively. The remaining 2 patients are managed by medical control and they are clean with minimal soiling when stools are loose. MRI and barium enema showed a centrally placed rectum in the muscle complex without dilatation in all cases. Manometry showed a high resting pressure that decreased on straining in the 7 clean patients and low in 2. The resting pressure did not increase on squeezing and all showed weak rectoanal inhibitory reflex (RAIR). One patient developed dysurea and constipation 1 year after surgery, as diagnosed by VCUG (voiding cystourethrogram) to have a diverticulum at the site of excised fistula causing rectal and urethral obstruction treated by a transabdominal excision with a good functional result. The state of continence with the laparoscopic technique in high anorectal malformations in this study showed acceptable results but needs bigger series with longer follow-up for a proper evaluation of this technique.

On-line mass spectrometry system for measurements at single-crystal electrodes in hanging meniscus configuration

We present the construction and some first applications of an On-line electrochemical mass spectrometry system for detecting volatile products formed during electrochemical reactions at a single-crystal electrode in hanging meniscus configuration. The system is based on a small inlet tip made of porous Teflon and a Peek holder, which is brought in close proximity (ca. 10–20 μm) to the electrode surface. The tip is connected to the mass spectrometer by glass and metal tubing. Because of the small amount of gas entering the mass spectrometer, no differential pumping is needed during the measurement. The tip construction and preparation introduced here leads to reproducible voltammetry with very good cleanliness characteristics. The presence of the tip has no significant influence on the blank voltammetry of a Pt(111) in sulfuric acid, and on voltammetric responses for CO adlayer oxidation, methanol oxidation, and hydroxylamine electrochemistry on Pt(111). The formation of gaseous products in these reactions can be followed accurately and is in good agreement with earlier results obtained by other mass spectrometric or spectroscopic techniques. The time response and tailing of the setup is on the order of seconds and mainly determined by the distance between the tip and the electrode.

Usage and status of cobalt-chromium removable partial dentures 5-6 years after placement.

The aim of this study was to describe the usage of cobalt-chromium (Co-Cr) removable partial dentures (RPDs) by patients 5-6 years after denture insertion and to find out the factors that affected their denture usage. A random sample of patients provided with Co-Cr RPDs from a dental teaching hospital in Hong Kong was selected. Patients were interviewed using a structured questionnaire concerning their assessment and use of the dentures. Those who had been constantly wearing their original RPDs were examined by one calibrated examiner under optimal clinical conditions. The response rate of the patients who could be contacted was 98%. The results from 189 patient interviews showed that usage of the RPDs declined with time and that half of the dentures had been discarded or replaced 5-6 years after insertion. These discarded RPDs had been in use for an average of 19.5 months. The main reason given by the patients for not using the RPDs was general dissatisfaction with the dentures in various combinations of comfort, fit and chewing ability and, less importantly, with food trapping and appearance. No statistically significant association between denture usage and their respective Kennedy classification was found. The status of the Co-Cr RPDs that had been constantly used for 5-6 years was generally good. The majority of these RPDs demonstrated fair to good cleanliness, stability and retention and had no defect of any sort.

LESCALLOY BG42 VIM-VAR

Abstract LESCALLOY BG42 VIM-VAR combines the tempering, hardness and hardness-retention characteristics of AISI M50 high-speed steel with the corrosion and oxidation resistance of AISI Type 440C stainless steel. LESCALLOY BG42 VIM-VAR is double vacuum melted (VIM, Vacuum Induction Melted; VAR, Vacuum Arc Remelted) to consistently assure good cleanliness and superior properties. It is used for bearings, gears, ball screws and other aerospace applications. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fatigue. It also includes information on corrosion and wear resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-356. Producer or source: Latrobe Steel Company. See also Alloy Digest SS-179, revised February 1992.

The Titanium Evaporation Pump, Its Application to Nuclear Fusion Experiments and Space Simulation

The pumping action of titanium is considerably enhanced if the active layer is made on a cold surface. High pumping speed of 10 liters/sec⋅cm2 for usual gases, capacity at saturation of about 1016 molecules/cm2, limit pressure down to 10−10 Torr, and good cleanliness make it very attractive for a number of applications. Titanium monoxide TiO has very similar properties at low temperature and, in addition, can pump argon. Titanium pumping is particularly suited to big-size installations with very specific problems like the nuclear fusion research apparatus and the space simulation chambers. Examples of these two cases are described.

鋼の引張試験における介在物の挙動と疲労性質

In order to investigate the effects of non-metallic inclusions on the strength of steels, the behavior of non-metallic inclusions under tensile stress was studied by microscopic observations and the fatigue properties of several 3%Ni-Mo-V steels made by different processes were tested. The results were as follows: (i) At a slight excess load over the yielding point, microcracks are found at the corners of non-metallic inclusions, especially on the transverse specimen; (ii) between the elongated type inclusions, silicate is more harmful than sulfide to transverse fatigue properties; and this is borne out by the higher strain concentration evident at the silicate during tensile test; (iii) the effect of sulfide on fatigue properties does not exceed 10%, even though the sulfide content is rather high and vacuum-poured electric-arc furnace steel has good cleanliness and good fatigue properties; and (iv) the notched fatigue strength shows little anisotropy.