bluuebunny/crossref_metadata_2025 huggingface dataset:
An Experiment on University English Translation Teaching Model Based on Big Data-Driven Learning
Authors: He Guanghui
Published: September 2023

Exploring the teaching mode of English translation in college to stimulate students’ learning initiative better and improve their English translation ability. In this paper, the basic principles of the plain Bayesian classification algorithm are introduced under big data technology-driven learning, and the conditional independence of plain Bayesian is illustrated. The algorithm and process of probabilistic classification of samples to be judged using great likelihood estimation are introduced, and the advantages and disadvantages of the algorithm are illustrated. Based on the disadvantages of this algorithm, the INB-MI classification algorithm is induced by adjusting the conditional probability after the number of smoothing using mutual information, and the validity is verified for this algorithm. For the university, English translation teaching was analyzed, a task-based English translation teaching model based on a blended environment was proposed, and the model was quantitatively analyzed with the INB-MI classification algorithm for the relevant data. In terms of cognitive types, the overall learning rate of this teaching model was 43.11%, 41.21%, 40.46%, and 38.3% for factual knowledge, conceptual knowledge, procedural knowledge, and metacognitive knowledge types, respectively. Regarding instructional evaluation, the percentage of those who agreed was 84.26%. Thus, the task-based English translation teaching model under big data-driven learning can help students integrate their existing knowledge and enhance their learning initiatives.
Design of IPR evaluation system based on linear regression model
Authors: Zhang Qihang , Jiang Jie , Feng Bo , Feng Junwen
Published: September 2023

This paper first defines the conceptual scope of intellectual property, and the intellectual property evaluation system analyzes the special characteristics of enterprise intellectual property evaluation and compares the differences between several intellectual property management models. Secondly, an open adaptive enterprise IPR evaluation system is constructed based on a linear regression model, and the system structure and the relationship between subsystems are analyzed in depth. Finally, based on the theory of adaptive evaluation management, the adaptive IPR evaluation system is constructed. The adaptive enterprise IPR evaluation model based on linear regression was constructed mainly from three dimensions, and the method to determine the development coordination index and early warning degree of the three dimensions was deduced. The results show that the average efficiency of the typical enterprise IPR evaluation system calculated based on the linear regression model is 0.86, which is 21.3% more efficient than the traditional model. Four of the decision units’ DEA is effective, 63% of the inputs are effective, and 37% of the input resources are wasted, which aligns with the actual enterprise. The adaptive IPR evaluation system based on the linear regression model proposed in this paper has theoretical innovation value and practical significance for enterprises to realize the transformation of IPR achievements.
China’s Stock Market Trend Prediction Model based on Adversarial Learning
Authors: Yang Dan , Zhang Yaomin
Published: September 2023

There are numerous stock market theories as a result of the gradual usage of mathematical models by researchers to forecast equities during the past few decades. By quantifying the rise and fall range, the prediction problem can be changed into a multi-classification problem based on the related data. This paper describes an Adversarial Learning-based stock forecast model by building a three-tier LSTM training network using the Adversarial Learning concept, selecting 300 stocks to represent the overall performance of the Chinese stock market, increasing the proportion of large to small training datasets, and strengthening the model’s ability to obtain detailed information from a small amount of data.
Seroprevalence of brucellosis infection in sheep in China during 2003-2022: A systematic review and meta-analysis
Authors: Wang Rulin , Bai Yunli , Li Yinfei , Zhou Weiguang
Published: September 2023

Brucellosis is an important zoonotic chronic infectious disease caused by Brucella. The disease mainly infects animals, such as sheep, cattle, pigs, and dogs, it can also infect humans, and sheep are the most seriously infected animals in China. The incidence of brucellosis has been rising annually in recent years, which has resulted in significant financial losses for the sheep business. Therefore, this systematic review and meta-analysis aimed to assess the seroprevalence of brucellosis infection in sheep in China from 2003 to October 2022. A sum of 92 relevant articles were retrieved from three Chinese databases and three English databases, and they were analyzed by RStudio software using a random-effects model. In accordance with the conclusions, the pooled incidence of brucellosis infection in sheep was 1.09% in China. Regarding the time distribution, sheep’s brucellosis seroprevalence was the highest from 2012 to 2016 (1.83%, 95% confidence interval (CI): 0.94-3.01) and the seroprevalence was the lowest during 2016-2022 (0.81%, 95% CI: 0.43-1.31). The regional distribution revealed that Northeast China has the highest seroprevalence (2.94%, 95% CI: 0.07-9.81), while that was the lowest in the East China (0.23%, 95%CI: 0.05-0.52). Among different provinces, Hebei Province had the highest incidence (17.41%, 95% CI: 17.41-21.77), and it was the lowest in Guangdong Province (0.08%, 95% CI: 0.02-0.18). Meta-analysis revealed that brucellosis infection was widely spread in sheep in China, thus, In order to lessen the financial losses and risks to human health brought on by brucellosis infection, it is vital to increase the control of the disease in animals.
Investigation into the Coincidence between Specialty Setting in Higher Vocational Colleges and Industrial Structure Utilizing a Coupling Coordination Evaluation Framework
Authors: Lu Zhengqiu , Zhou Chunliang , Zhoudan
Published: September 2023

The coincidence between specialty setting and industrial structure within higher vocational colleges epitomizes the tangible foundation for the amalgamation of industry and education in advanced vocational training, serving as an essential element in Ningbo’s regional economic evolution. Through an examination of Ningbo’s prevailing industrial composition and the regional specialty setting of higher vocational colleges, this study evaluates the congruity between specialty setting and industrial structure by fashioning a deviation degree model. Concurrently, it calculates the comprehensive development level of specialty setting and regional industry through entropy weight method, and then probes the coupling coordination magnitude between specialty setting and regional industry through the construction of a coupling assessment coordination framework on this basis. The findings reveal that the specialty setting and industrial structure of higher vocational colleges in Ningbo exist in a state of significant coupling, and the interconnection degree between the two is commendable. Nevertheless, the overall deviation is notably substantial, indicating that the coupling coordination demands further refinement. Hence, it becomes imperative to augment the synchronized advancement between specialty setting in higher vocational colleges and regional industries within Ningbo, focusing on three vital dimensions: the optimal utilization of the government’s comprehensive planning capability, the predominant role of higher vocational colleges, and the synergistic collaboration with enterprises within the context of higher vocational education.
Influence of Fatigue on Flight Safety: A Structural Equation Modeling Analysis
Authors: Zhu Shouxi , Chen Jian
Published: September 2023

Currently, pilot fatigue is considered to be a significant factor that affects aviation safety. In order to investigate the impact of fatigue on flight safety, we design a questionnaire to conduct a survey on the pilots of Shandong Airline, process and analyze the data through the SPSSAU data analysis platform, and construct a structural equation between fatigue and pilot unsafe behaviors. The study findings indicate that there is a significant relationship between situational awareness, safety awareness, crew atmosphere, work pressure and pilot fatigue, and the higher the pilot fatigue level, the lower situational awareness and safety awareness, the worse crew atmosphere and the higher work pressure. Compared to physical fatigue, mental fatigue was more vulnerable to the above four factors, and at the same time, it was also more likely to lead to the pilot’s unsafe behaviors, thus threatening flight safety. Therefore, in order to guarantee flight safety, airlines and aviation administration should pay more attention to pilot’s mental fatigue problems.
The moderating effect of creativity on entrepreneurial intention of Chinese vocational college students
Authors: Wang Chengming , Zhang Yanhua , Ding Hui , Zhang Li
Published: September 2023

At present, Chinese colleges and universities pursue “innovative talents” more strongly than ever. The status quo of creativity is closely related to the relatively low success rate of Chinese college students’ entrepreneurship. This paper combs the research results on the impact of creativity on college students’ entrepreneurial intention, and conducts a confirmatory analysis on the regulatory effect of creativity on entrepreneurial intention of Chinese vocational college students. This paper takes creativity as the independent variable, takes entrepreneurial intention as the dependent variable, makes an empirical analysis on the final sample data of 508 vocational college students, taking Chinese vocational college students as the survey objects. We find that creativity has a positive and distinctive impact on entrepreneurial intention of Chinese vocational college students. At the same time, we can see that there are obvious differences between entrepreneurial cultures of different countries and creativity of college students. It is suggested that the Chinese government should guide college students to cultivate entrepreneurial thinking, bring innovative thinking and adventurous spirit into their study and life, and actively advocate the establishment of a diversified and sustainable entrepreneurial ecology.
Some new existence results for fractional partial random nonlocal differential equations with delay
Authors: Heris Amel , Salim Abdelkrim , Benchohra Mouffak
Published: September 2023

The present paper deals with some existence results for the Darboux problem of partial fractional random differential equations with finite delay. The arguments are based on a random fixed point theorem with stochastic domain combined with the measure of noncompactness. An illustration is given to show the applicability of our results.
Modelling and predicting coastal zone depth profile evolution: a survey
Authors: Baramiya Denis , Lavrentiev Mikhail , Spigler Renato
Published: September 2023

We survey results concerning the problem of identifying depth profiles at coastal zone, which evolve in time due to natural as well as anthropic activities. This issue is relevant to control the modifications of the environment occurring near sea coastlines, but also in river's estuaries and harbors. One of the main goals is to predict the time evolution of the depth profile in the long-term (i.e., over years or decades, say), and to do this on the basis of real observed and measured data, available in several databases. Most mathematical models are formulated in terms of partial differential equations of the diffusive type, in one or two space dimensions. Consequently, from the mathematical standpoint, the aforementioned identification problem takes on the form of an inverse problem for some given parabolic equation associated with suitable initial and boundary conditions.
Correlation between the size of pheochromocytoma and the level of metanephrines
Authors: Rezkallah Emad , Elsaify Andrew , Hanna Ragai , Elsaify Wael
Published: September 2023

Objective. Pheochromocytomas (PHEO) and paraganglioma (PGLs) are rare neuroendocrine catecholamine-producing tumors that arise from the chromaffin cells of either the adrenal medulla or extra-adrenal paraganglionic tissues. Despite the recent advances in imaging technologies, biochemical evidence of excessive catecholamine production by the tumor is considered the most important test for the diagnosis of these tumors. The aim of the present study is to investigate the role of the catecholamine metabolites (normetanephrine and metanephrine) levels in the diagnosis of PHEO/PGLs and to evaluate if their levels correlate with the size of these tumors.

Patients and Methods. Twenty-five patients were included in the study during the time period of 10 years. Their data were compared with another set of 25 patients to obtain the sensitivity and specificity of metanephrine and normetanephrine in the diagnosis of PHEO/PGLs. The tumor size was reviewed in every patient to obtain the correlation coefficient between the tumor sizes and the plasma/24-hour urinary metanephrine levels.

Results. The sensitivity and specificity rates for plasma metanephrine were 80–92% and 92–96%, respectively; while for 24-hour urinary metanephrine were 80–90% and 95–100%, respectively. We found a strong positive relationship between the tumor size and the plasma levels of normetanephrine (r=0.518, p<0.01), and metanephrine (r=0.577, p<0.01). While the relation with the 24-hour urinary concentrations of normetanephrine (r=0.384, p=0.01) and 24-h urinary meta-nephrine (r=0.138, p<0.01) was low.

Conclusion. The determination of plasma and 24-hour urinary levels of metanephrines is a reliable test for the diagnosis of PHEO, as they are continuously produced by the tumor cells in contrast to catecholamines.
Customer Experience Management: Analysis of Customer Retention in Restaurants in Anambra State, Nigeria
Authors: Nwankwo Cosmas Anayochukwu , Kanyangale MacDonald Isaac
Published: September 2023

This study examined the effect of customer experience management (CEM) on customer retention in restaurants in Anambra State, Nigeria. Specifically, the study sought to investigate the influence of affective customer experience, cognitive customer experience, physical customer experience and social-identity customer experience on customer retention in restaurants in Anambra State, Nigeria. The study adopted a survey research method. The study found that affective customer experience, cognitive customer experience, physical customer experience and social-identity customer experiences have a significant effect on customer retention in restaurants in Anambra State, Nigeria. Based on the foregoing, the study concluded that CEM had a significant effect on customer retention in restaurants in Anambra State, Nigeria. The study recommended, amongst others, that management of restaurants should deliberately focus on humanic clues in terms of providing a conducive environment, especially one that is always clean for its customers.
The Dynamism of the Environment — The Impact on Service Company Competitive Advantage from a CRM Dynamic Capabilities Perspective
Authors: Pukas Anetta
Published: September 2023

Objective

To explore the dynamism of the environment and the impact on service company competitive advantage from a customer relationship management (CRM) dynamic capabilities (DCs) perspective. This work also aims to develop a multidimensional conceptualisation of the dynamic environment and propose a theoretical model for analysing the impact of the environment's dynamism on the relationship between dynamic CRM capabilities and competitive advantage.

Research Design and Methods

Based on the resource-based view (RBV) and dynamic capabilities view (DCV), the method of critical literature analysis was used. Literature sources written in the last two decades were analysed.

Findings

The result of the literature research became the development of a new conceptualisation of the dynamic environment and its three relevant dimensions, as well as the proposal of constructs in the theoretical model, where the dynamism of the environment plays a moderating role in the relationship between dynamic CRM capabilities and competitive advantage.

Implications/Recommendations

As implications for further research, empirical verification of the created model and checking the relationship between the constructs should be indicated.

Contribution

The findings extend the application of RBV and DCV in marketing knowledge. In addition, the model and this study's conclusions direct service firms to develop CRM capabilities that can enhance the company, thereby enabling the building of competitive advantage in a dynamic environment.
New Product Development from the Perspective of Creating a Competitive Advantage
Authors: Dąbrowski Dariusz
Published: September 2023

It is acknowledged that achieving product-based competitive advantage is a key task for a company. However, there is still a research gap in determining those specific actions in the process of developing new products that arise from companies’ efforts to achieve product-based competitive advantage. Therefore, the aim of this study is to determine the specific actions in the new product development (NPD) process that result from companies’ intention to introduce a new product to the market, enabling the achievement of a competitive advantage. The primary research method used in this study is deductive reasoning, supplemented by a literature review. The result of the study is the proposal of three types of actions: a) evaluating an opportunity in terms of its potential to generate a competitive advantage; b) creating a new product with high economic value; and c) assessing both the planned new product and the new product introduced to the market in terms of achieving a competitive advantage. The latter two types of actions can be undertaken at various stages of the NPD process and can pertain to the product concept itself and to specific product forms (e.g., prototypes, pilot products). These proposed actions are significant because attaining a product-based competitive advantage contributes to the achievement of other objectives related to new products (e.g., revenue generation). Therefore, it is recommended that companies incorporate these actions into their NPD process. This study contributes to the field of management by proposing few specific actions in each phase of the NPD process, which arise from a company's intention to achieve a product-based competitive advantage, addressing a previous gap in the literature.
Doctor, am I allowed to drive? A practical case-based guide on fitness to drive in cardiovascular diseases adapted from the Swiss model
Authors: Achim Alexandru
Published: September 2023

From 2016 onwards, a group of cardiologists initially formed in 2013 took the initiative to regulate and standardize the rights of European citizens suffering from diverse cardiovascular conditions at the European level. Subsequently, the Romanian government embraced and incorporated these recommendations into law a year later. This process addressed several important new aspects, including stents, myocarditis, and various cardiomyopathies, with a focus on striking a balance between the individual’s right to drive a vehicle and the need to safeguard the lives of others. The Romanian law, however, is vague and states that “candidates or drivers from the indicated groups can be issued or renewed their driving licenses only after the condition in question has been effectively treated and subject to the opinion issued by the specialist cardiology doctor and, depending on a case, by performing a periodic medical check” but does not clearly specify how and for how long and to whom exactly the driver’s license should be suspended. Interestingly, Switzerland, despite not being an EU member, developed its own set of recommendations three years later, drawing strong inspiration from the German guidelines, which in turn personalized its indications (being the European country with the most publications in this field). A refinement of the refinement, one could say. The indications are clear, precise, and structured in a point-by-point fashion. The purpose of this review is to explore the Swiss guidelines on fitness to drive in cardiovascular diseases interactively, with discussions on fictitious cases, in the hope that doctors will be able to become more familiar with these rigid and often interpretable indications and implement them in their daily practice.
Evaluating Shading Effects of PV Systems: Discrepancies in Simulation Software and Energy Consumption
Authors: Albatayneh Aiman , Albadaineh Renad
Published: September 2023

A critical procedure in sustainable building design is that building energy consumption has significant implications for the global energy crisis and climate change. This study compares three simulation software programs for a photovoltaic system on a building’s roof. The low-rise residential buildings in three East Mediterranean cities (Amman, Mafraq, and Aqaba) represent moderate dry–warm, semi-arid, and humid subtropical climate zones were compared using three simulation software programs (IES-VE, Design-Builder, REVIT) for a typical building with PV on the roof and the second scenario without a PV system installed on the roof. This investigation aims to evaluate the shading effect of the PV system on a building’s roof structure by calculating the total heating and cooling loads required to maintain thermal comfort inside the building. The results showed significant discrepancies between the three software for the base building design and the PV system on the roof, with a range of around 50 %. This highlights the importance of evaluating and calibrating different simulation tools and using them with a great deal of caution.
Methods for Extraction of Bioactive Compounds from Products: A Review
Authors: Luksta Ilze , Spalvins Kriss
Published: September 2023

Most agricultural by-products are not recycled or fully utilized. Most of them end up in waste and cause economic, social and environmental problems. Today, much of the byproducts are considered waste, although they can be appropriately recycled to produce new value-added products. By-products have great potential to create, for example, food additives. Many of these byproducts are a source of valuable compounds such as proteins, lipids, starches, trace elements, bioactive compounds and dietary fiber. A wide variety of extraction methods are currently available, but several factors must be considered to determine which of these methods can efficiently and environmentally produce high-value-added products from by-products. The article examines, summarizes and compares various extraction methods, as well as products that are currently obtained using specific methods.
Professional Activation of Women and Flexible Forms of Employment, as Exemplified by Gig Economy
Authors: Dettlaff Alicja
Published: September 2023

The aim of the article is to present the idea of Gig Economy as a flexible form of employment, which may serve as an opportunity to break the cycle of professional passivity among women in a macroeconomic scale. The author presents data on unemployment and access to employees on the labor market, and compares them with a relatively low level of professional activity among women. The article explores the issue of motivation to undertake professional activity, discusses the barriers to building a professional path by women, and indicates the potential influence of flexible forms of employment, based on the example of gig economy, on the improvement of the professional situation of women. Based on the available reports, secondary data and source literature the author identifies the basic social factors which impact the growth of professional activity among women, indicating the relationship between flexible forms of employment and the state of the labor market, expressed through the activeness of women.
Analysis of Vocabulary Mastery and Critical Thinking Skills as Preparation for Scientific Presentations
Authors: Nurhayati Septi
Published: September 2023

The significance of students possessing public speaking skills is an issue that requires attention. As a university student, proficiency in public speaking, in this instance scientific presentations, is unquestionably essential. This is essential if you want to give a presentation, complete an assignment, participate in the community during KKN, etc. Clearly, doing all of this would be a very essential task. In this case, Public Speaking skills in the form of scientific presentations are often used by students, particularly during lectures, from the beginning to the final assignment that must be completed is the skill of presenting a scientific work. In almost all courses, students are frequently required to write and present scientific papers. Presentation is a form of communication that facilitates logical, precise, and persuasive thought. This study seeks to determine the direct relationship between vocabulary mastery and critical thinking skills and students' abilities to present scientific work. This research method is qualitative description, which provides explanations in the form of descriptions based on data from a variety of scientific sources. Using this methodology, researchers are able to explain in detail and in an organized manner the impact of vocabulary mastery and critical thinking skills on students' capacity to present scientific work. Based on the collection, analysis, and research of scientific data and references. The current research will investigate the relationship between vocabulary mastery and critical thinking skills, as well as the impact of these two factors on students' abilities to create scientific presentations
Studi Perancangan Dan Pemanfaatan TPS 3R Untuk Sampah TPS (Tempat Pengolahan Sampah Rumah Tangga
Authors: Kasih Dian , Indrawan Irvan , Setyowati Lies , Tanjung Munir , Suryati Isra
Published: September 2023

As the population increases, waste generation and composition will increase. Therefore, there is a need for planned and effective waste handling so that the problem of waste can be resolved in accordance with the 3R (Reuse, Reduce, and Recycle) concept. The aim of this research is to calculate the amount of waste generation and the composition of domestic waste produced by the residents of Medan Denai, and also devise the type of 3R Waste Treatment Plant for the District of Medan Denai. The method for measuring the generation and composition of waste are based on SNI 19-3964-1994, that is based on income level. Meanwhile, the typical planning of TPS 3R is obtained from the calculation of waste generation which is associated with the projection of population. The result showed that the average of household waste in the District of Medan Denai was 0.265 kg/person/day or 1.4 l/person/day. The composition of household waste generation in the District of Medan Denai is dominated by food waste 65.38 %. It is estimated that in 2026, the waste generation produced in the District of Medan Denai would reach about 41,593.7 kg/day. The economic potential that can be generated by using 3R concept is estimated reaching about Rp11,687,190 - Rp85,370,971 per day. Managing waste with 3R concept require a TPS with 1,488.24 m2 of area to process the household waste, with the estimated cost required to build the facility is Rp598,960,540 and the operational cost is Rp104,000,000 per month.
Studi Penurunan Chemical Oxygen Demand (COD) Pada Air Limbah Domestik Buatan Menggunakan Biofilter Aerob Tercelup dengan Media Bioring
Authors: Dayanti Marieta Sarahrut , Herlina Netti
Published: September 2023

The purpose of this research is to know the effect of debit variation on Chemical Oxygen Demand (COD) reduction efficiency in artificial domestic wastewater after being processed using aerobic biofilter reactor. The biofilter was maintained at continues flow and aerobic state. The debit variations used were 0.56 l/h for 72 hours retention time, 0.83 l / h for 48 hours retention time and 1.67 l/h for a 24 hour retentione time. Efficiency of COD decreased at 0.56 l/hr variation was 84%, at 0.83 l / h was 86% while at 1.67 l/h was 75%. The effluent of domestic wastewater treatment using aerobic biofilter with bio ring media has fulfilled the Minister of Environment and Forestry Regulation No. 68/2012 on Quality Standard of Domestic Wastewater.
Studi Dinamika Kualitas Air Daerah Aliran Sungai Batang Arau di Propinsi Sumatera Barat
Authors: Erniwati Erniwati
Published: September 2023

Batang Arau banyak mengalami polusi air, pencemaran air sungainya memberikan kerusakan DAS dan peningkatan sedimen. Ini mengakibatkan banyaknya masuk buangan limbah cair yang bersumber dari limbah penduk dan limbah industri. Batang Arau adalah salah satu sumber air baku terutama sumber air baku untuk kebutuhan sehari dan sekarang kualitasnya sudah sangat menurun. Tinjauan mutu kualitas air sesuai dengan kriteria pada Peraturan Pemerintah No.82 tahun 2001 tentang pengelolaan kualitas air dan pengendaliannya.Â  Metode yang dipakai dalam pengujian ini metode SNI mengenai parameter kualitas air dan standar methode untuk pemerisaan air dan air limbah, Apha washington DC serta beberapa alat untuk pengujian mutu, data sekunder sebagai pendukung data dan lokasi letak penelitian contoh uji. Tujuan penelitian ini adalah untuk menguji, meneliti dan evaluasi kualitas air di berbagai tempat di Sungai Batang Arau . Kualitas air sangat dipengaruhi pencemaran lingkungan daerah aliran sungai, oleh rumah potong hewan, kegiatan pertanian yang terletak di hulu, serta kegiatan industri karet yang terletak di bagian hilir sungai. Jumlah suspended solid jauh lebih tinggi di aliran sungai menurun. Itu adalah sekitar 144 mg/L di hilir dan hanya 74 mg/L di hulu lokasi. Konduktivitas daya hantar listrik adalah sekitar 114â€“189 Umhos/cm. The BOD dan COD nilai yang variabel sekitar 3,4-9,7 mg/L. Padatan Terlarut yang terkandung dalam air sungai Batang Arau juga akan mempengaruhi tingkat beban pencemaran dalam air yang dapat menyebabkan penurunan kualitas air sungai Batang Arau, nilai BOD berkisar 5,3 mg/L â€“ 18,3 mg/L dan nilai COD 13,7 mg/L - 50,7 mg/L. Dalam air sungai Batang Arau padatan terlarut hulu bagian 112- 124 mg/L dan di hilir 118 â€“144 mg/L. DO adalah variabel diÂ  hulu karena air dari berbagai anak sungai berkisar 4,8 â€“ 7,3 mg/L. Kualitas air yang berubah â€“ rubah (tercemar) disebabkan limbah cairan yang masuk ke aliran sungai. Berdasarkan fakta-fakta IPAL pengolahan air limbah tidak beroperasi pada kondisi yang optimal. Operasi rencana pengolahan air limbah yang efektif dan peraturan pembuang limbah cair sebelum lepas ke sungai diharapkan untuk memenuhi standar kualitas air nasional.Â  Pengolahan limbah cair dengan treatmen fisika, kimia dan biologi menjadikan kualitas air bagus.
Sebaran Nilai Daya Hantar Listrik dan Salinitas pada Sumur Gali di Pesisir Pantai Kecamatan Padang Barat
Authors: Edwin Tivany , Regia Rinda Andhita , Rahmi Fauzia
Published: September 2023

This study aims to determine the distribution of electrical conductivity and salinity values in dug well water as an indication of sea water intrusion. The study was conducted on the coastal area of Padang Barat District with 30 sample points and variation of 0-500 m distance from shore to the land. Measurement of electical conductivity values is measured in the field using conductivity meter while for salinity by argentometric method to analyze chloride ions which are then converted to Knudsen Equation. The range of conductivity values is 163.4-5260,8 Î¼S / cm while the salinity value is 0.303-0.564 â€°. The relation of electrical conductivity and salinity values shows a very strong correlation with a value of 0.9373. The relation of the electrical conductivity value with the distance from the shoreline and the depth of the well shows no correlation with values of 0.264 and 0.054. The salinity value with the distance from the shoreline and the depth of the well also showed no correlation with the values of 0.205 and 0.003. The comparison of measured values with groundwater classification known as 2 points is slightly brackish water as an indication of sea water intrusion found in Purus and Berok Nipah sub-districts.
Timbulan dan Komposisi Sampah Bahan Berbahaya Dan Beracun (B3) Sarana Pelayanan Kota Di Kota Padang
Authors: Ruslinda Yenni , Supratman Ade , Lestari Nur Indah
Published: September 2023

Generation and composition data of solid waste was the initial data needed in solid waste management system planning. This research aims to measure and analyze the generation and composition of Hazardous Solid Waste (HSW) from the source of municipal service facilities in Padang City. Municipal service facilities studied include recreation facilities, beaches, parks, and roads. Determination of the number of samples based on SNI 19-3964-1994 with the total sample of 11 samples and confidence level of 99.77%. Results of the study showed that total HHW generation from municipal service facilities in Padang city was 394.67 kg/day (2,312.41 liters/day), with the generation average of 0.000220 kg/m2/day in weight basis or 0.001262 liters/m2/day in volume basis. The percentage of HHW generation to total solid waste of municipal service facilities in Padang City was 0.95% in weight basis or 0.61% in volume basis. The largest composition of HHW from municipal service sources based on the type of use was body care products by 84% and based on general characteristics is toxic by 87%.Keywords: Composition, Generation, Hazardous Solid Waste (HSW), Municipal service facilitiesABSTRAKData timbulan dan komposisi sampah merupakan data awal yang dibutuhkan dalam perencanaan sistem pengelolaan sampah. Penelitian ini bertujuan untuk mengukur dan menganalisis timbulan dan komposisi sampah B3 yang berasal dari sarana pelayanan di Kota Padang. Sarana pelayanan kota dalam penelitian ini meliputi sarana rekreasi, pantai, taman, dan penyapuan jalan. Penentuan jumlah sampel berdasarkan SNI 19-3964-1994, dengan jumlah sampel sebanyak 11 buah dan tingkat kepercayaan 99,77%. Dari hasil penelitian diperoleh timbulan sampah B3 dari sarana palayanan di Kota Padang sebesar 394.67 kg/hari (2,312.41 liter/hari) dengan satuan timbulan rata-rata 0,000220 kg/m2/hari dalam satuan berat atau 0,001262 liter/m2/hari dalam satuan volume. Persentase timbulan sampah B3 di dalam total sampah pelayanan kota di Kota Padang adalah 0,95% dalam satuan berat atau 0,61% dalam satuan volume. Komposisi sampah B3 terbesar dari sumber pelayanan kota berdasarkan jenis penggunaannya merupakan produk perawatan badan sebesar 84% dan berdasarkan karakteristiknya bersifat toksik sebesar 87%.Kata kunci: Komposisi, Timbulan, B3, Sumber pelayanan kotaÂ Â
Pemanfaatan Lumpur Sungai Ciliwung Dengan Metode Solidifikasi
Authors: Mochammad Chaerul , Pasaribu Roy Jeremiah
Published: September 2023

Â Sediment potentially leads to siltation of the river and overflow of river water during the rainy season.Â  Existing management of the sediment is to collect, transport and dispose in a site without any proper handling procedure prior and it may cause environment burden. This study aims to utilize the sediment in Ciliwung river as a structural material through a set of solidification procedure. The mixing of cement and fine aggregate is necessary to produce 5x5x5 cm3 mortar to be tested. The sediment may be classified as non-hazardous waste and it can be used to substitute sand as the fine aggregate. The highest compressive strength of 216 kg/cm2 can be produced at ratio of cement and the fine aggregate of 1:3 with the sediment substitution of 50% and the product can be classified as class B of paving block or class I of brick. Through Toxicity Characteristic Leaching Procedure (TCLP) test, it find that the metals substance in the sediment bounded properly in the solid matrix and it prevents the metals leaching out to the environment. The study reveals that the utilization of the sediment through the solidification become a prospective measure by producing a useful product with minimum impact on the environment.Â Keywords: Sediment, fine aggregate, solidification, compressive strength, Toxicity Characteristic Leaching ProcedureÂ Â ABSTRAKÂ Â Lumpur berpotensi menyebabkan pendangkalan sungai dan meluapnya air sungai selama musim hujan. Manajemen lumpur yang ada adalah mengumpulkan, mengangkut, dan membuang di lokasi tanpa prosedur penanganan yang tepat sebelumnya dan dapat membebani lingkungan. Penelitian ini bertujuan untuk memanfaatkan lumpur di sungai Ciliwung sebagai material struktural melalui serangkaian prosedur pemadatan. Pencampuran semen dan agregat halus diperlukan untuk menghasilkan mortar 5x5x5 cm3 untuk diuji. Lumpur dapat diklasifikasikan sebagai limbah tidak berbahaya dan dapat digunakan untuk menggantikan pasir sebagai agregat halus. Kuat tekan tertinggi 216 kg/cm2 didapat Â pada rasio semen dan agregat halus 1: 3 dengan substitusi sedimen 50% dan produk dapat diklasifikasikan sebagai paving block kelas B atau bata kelas I. Melalui uji Toxicity Characteristic Leaching Procedure (TCLP), ditemukan bahwa zat logam dalam lumpur terikat dengan benar dalam matriks padat dan mencegah logam berpindah ke lingkungan. Dari penelitian ini, didapatkan bahwa pemanfaatan lumpur sungai dengan pemadatan berpotensi Â menghasilkan produk yang bermanfaat dengan dampak minimal terhadap lingkungan.Â Kata kunci: Lumpur, Agregat halus, Solidifikasi, Kuat tekan, Toxicity Characteristic Leaching ProcedureÂ Â Â Â Â Â Â Â Â
Kajian Penerapan Sistem Pengelolaan Sampah dengan Pendekatan Metode 3R di Kabupaten Padang Pariaman
Authors: Aziz Rizki , Ihsan Taufiq , Suhaila Datin
Published: September 2023

Â This study aims to determine the existing conditions of solid waste management in Padang Pariaman Regency and the problems faced, as well as to assess the potential of implementing a municipal solid waste management system using the reduce-reuse-recycle (3R) method through a 3R based Solid Waste Treatment Plant (3R-SWTP) for region scale and Integrated Solid Waste Treatment Plant (ISWTP) for the city scale as a solution to municipal solid waste problems. This study was conducted through surveys, observations and interviews with solid waste management institutions, collection of secondary solid waste management data and literature studies. From the survey, observation, and interview it was found that the solid waste generation of Padang Pariaman Regency was 1,396 m3/day and only 1,35% of the total solid waste was served. The problem of waste management faced wereÂ  the high amount of waste that is not served, the inadequate facilities and infrastructure for operational solid waste handling and the low level of solid waste minimization practices. Through the implementation of the 3R-SWTP and ISWTP-based solid waste management system, it is estimated that it will be able to minimize the city solid waste by 23% by operation of 7 unit of 3R-SWTP and 1 unit of ISWTP within 5 years.Â Keywords: solid waste management system, 3R method, 3R-SWTS, ISWTP, Padang Pariaman RegencyÂ Â ABSTRAKÂ Â Penelitian ini bertujuan untuk mengetahui kondisi eksisting pengelolaan sampah di Kabupaten Padang Pariamandan permasalahan yang dihadapi, serta mengkaji potensi penerapan sistem pengelolaan sampah kota dengan pendekatan metode reduce-reuse-recycle (3R) melalui sistem pengelolaan sampah berbasis Tempat Pengolahan Sampah (TPS3R)untuk skala kawasan dan Tempat Pengolahan Sampah Terpadu (TPST) untuk skala kota sebagai solusi permasalahan sampah kota kedepan. Studi ini dilakukan melalui survey, observasi dan wawancara dengan lembaga pengelola sampah, pengumpulan data skunder pengelolaan sampah dan studi literatur. Dari survey, observasi, dan wawancara diketahui bahwa timbulan sampah Kabupaten Padang Pariaman sebesar 1.396 m3/hari dan hanya1,35% sampah yang terlayani.Permasalahan pengelolaan sampah yang dihadapi adalah besarnya timbulan sampah yang tidak terlayani, sarana dan prasarana teknis operasional penanganan sampah yang belum memadai serta rendahnya praktik minimisasi sampah. Melalui penerapan sistem pengelolaan sampah berbasis TPS3R dan TPST diperkirakan akan dapat meminimisasisampah kota sebesar23% dengan operasional 7 buah TPS3R dan 1 buah TPST dalam jangka waktu 5 tahun.Â Kata Kunci: Sistem pengelolaan sampah, metode 3R, TPS3R, TPST, Kabupaten Padang PariamanÂ Â Â Â Â Â Â Â Â
Pengendalian Kontaminasi Total Coliform pada Depot Air Minum Isi Ulang dengan Konsep Hazard Analysis Critical Control Point
Authors: Regia Rinda Andhita , Ihsan Taufiq , Tirta Dhita Dwi
Published: September 2023

Â Total Coliform as an indicator of food or beverage pollution can cause food-borne diseases. In the food and beverage production process, hygiene and sanitation are part of the Hazard Analysis Critical Control Point (HACCP) is one of the efforts to avoid pollution to the production process. This study aims to control Total Coliform contamination with the HACCP concept carried out in 10 drinking water depot in Pauh Subdistrict, Padang City through direct field observation and laboratory testing using the Most Probable Number (MPN) method. The test point in this study is the raw water contained in the reservoir, the production water that will be sold to consumers and the drinking water will be consumed for 3 days in gallon. The test results showed hygiene and sanitation of drinking water depot and Total Coliform content had a negative and strong relationship (r = -0.750) means that the higher the hygiene and sanitation of drinking water depot, so the lower the Total Coliform content in drinking water. Based on the results of the hazard analysis which is the CCP point are the filter tube, UV light and gallon washing. Therefore, control measures so that the CCP point that exceeds the quality standard can be accepted are controlling the drinking water process and tightening hygiene and sanitation of drinking water depot employees.Â Keywords: Total Coliform, Drinking Water Depot , HACCP, Pauh Sub-dDistrict, hygiene sanitationÂ Â ABSTRAKÂ Â Total Coliform sebagai indikator pencemaran makanan atau minuman dapat menyebabkan penyakit bawaan makanan. Dalam proses produksi makanan dan minuman, kebersihan dan sanitasi yang menjadi bagian dari Hazard Analysis Critical Control Point (HACCP) adalah salah satu upaya untuk menghindari polusi pada proses produksi. Penelitian ini bertujuan untuk mengendalikan kontaminasi Total Coliform dengan konsep HACCP yang dilakukan di 10 depot air minum (DAMIU) di Kecamatan Pauh, Kota Padang melalui observasi lapangan langsung dan pengujian laboratorium menggunakan metode Most Probable Number (MPN). Titik uji dalam penelitian ini adalah air baku yang terkandung dalam reservoir, air produksi yang akan dijual kepada konsumen dan air minum akan dikonsumsi selama 3 hari dalam galon. Hasil tes menunjukkan kebersihan dan sanitasi depot air minum dan kandungan Total Coliform memiliki hubungan negatif dan kuat (r = -0,750) berarti semakin tinggi kebersihan dan sanitasi DAMIU, sehingga semakin rendah kandungan Total Coliform dalam air minum . Berdasarkan hasil analisis bahaya, yang merupakan titik CCP adalah tabung filter, sinar UV dan pencucian galon. Oleh karena itu, langkah-langkah pengendalian terhadap poin kritis yang menyebabkan tidak tercapainya standar kualitas, adalah dengan mengendalikan proses air minum dan memperketat kebersihan dan sanitasi karyawan DAMIU.Â Kata kunci: Total Coliform, DAMIU, HACCP, Kecamatan Pauh, sanitasi peroranganÂ Â Â Â Â Â Â Â Â
Pengolahan Limbah Cair Laundry Menggunakan Kombinasi Media Pasir Silika-Karbon Aktif-Manganese Greensand
Authors: Zahro Septi Fatimatus , Setyowati Rr. Diah Nugraheni , Nengse Sulistiya , Utama Teguh Taruna
Published: September 2023

Laundry wastewater contains various kinds of contaminants, and high BOD5, COD, and phosphate. The wastewater laundry is directly disposed into sewerage without treatment. The results showed that BOD5, COD, TSS, phosphate, and pH parameters of laundry wastewater are 180.7 mg/L, 500.3 mg/L, 30 mg/L, 31.8 mg/L, and 8.3, respectively. One of the wastewater treatment methods is filtration. This research used multimedia filtration with three different media. There are three kinds of media which are silica sand, activated carbon, and manganese greensand. The purpose of this research was to find out the design of the reactor, to know the concentration of the test parameter before and after this processing, and to calculate the removal efficiency. The results showed that the reactor design measured 15x15x80 cm. On water quality before processing, there are three parameters that do not meet quality standards, and after processing all of the parameter tests do meet quality standards except phosphate. The best penyisihan efficiency for BOD5 test parameters was 68.56%, COD was 65.78%, TSS was 6.67%, phosphate was 16.35%, and pH was 12.04%. Further research is needed to know the saturation time of each filter media.Â Keywords: Laundry wastewater, filtration, silica sand, activated carbon, manganese greensandÂ Â Â Â Â Â Â Â ABSTRAKAir limbah laundry mengandung berbagai macam kontaminan, dan BOD5, COD, dan fosfat yang tinggi. Air limbah cucian ini langsung dibuang ke saluran pembuangan tanpa pengolahan. Hasil pengecekan parameter BOD5, COD, TSS, fosfat, dan pH air limbah laundry adalah 180,7 mg/L, 500,3 mg/L, 30 mg/L, 31,8 mg/L, dan 8,3. Salah satu metode pengolahan air limbah adalah dengan penyaringan. Dalam penelitian ini digunakan filtrasi multimedia dengan tiga media yang berbeda. Ada tiga macam media yaitu pasir silika, karbon aktif, dan manganese greensand. Tujuan dari penelitian ini adalah untuk mengetahui desain reaktor, mengetahui konsentrasi parameter uji sebelum dan sesudah pengolahan, serta menghitung efisiensi penyisihan. Hasil penelitian menunjukkan bahwa desain reaktor berukuran 15x15x80 cm. Pada kualitas air sebelum pengolahan ada tiga parameter yang tidak memenuhi baku mutu, dan setelah pengolahan semua parameter uji memenuhi baku mutu kecuali fosfat. Efisiensi penyisihan terbaik untuk parameter uji BOD5 adalah 68,56%, COD 65,78%, TSS 6,67%, fosfat 16,35%, dan pH 12,04%. Perlu dilakukan penelitian lebih lanjut untuk mengetahui waktu saturasi masing-masing media filter.Â Kata kunci: Air limbah laundry, filtrasi, pasir silika, karbon aktif, manganese greensandÂ