Trend in lightweight automotive materials for improving fuel efficiency and reducing carbon emission

Depletion of fossil fuels and greenhouse gases is an essential issue in the development of the automotive industry. From the design stage, material selection becomes the most crucial factor. Therefore, this article discusses the development of lightweight automotive materials for increasing fuel efficiency and reducing carbon emissions. Material reliability is assessed by how much weight reduction can be achieved, production costs, safety and durability. Ferro materials (mild steel, High Strength Steel, and Advanced High Strength Steel), non-ferrous (aluminium and magnesium alloy), and Fiber Reinforced Plastics (FRP) have been proven to reduce the total weight of vehicles up to 12.6%. Confirmation of statistical data from the literature illustrates the possibility of using lightweight material to achieve zero CO2 emission. In addition, the 12.6% weight reduction still meets the vehicle safety factor

MENUMBUHKAN SEMANGAT BERWIRAUSAHA MELALUI PENDAMPINGAN TERHADAP UKM PADA PERCETAKAN PERCETAKAN USAHA BUNDA RANTAUPRAPAT

UMKM memiliki peran penting bagi perekonomian Indonesia karena dipercaya memiliki ketahanan ekonomi yang tinggi sehingga dapat menjadi penopang bagi stabilitas sistem keuangan dan perekonomian. Para pelaku UMKM harunya memiliki semangat berwirausaha yang tinggi karena dengan berwirausaha dapat menciptakan kemandirian finansial dan tidak tergantung terhadap suatu perusahaan, tentu hal ini sangat memberikan solusi untuk mengurangi pengangguran. Untuk itu seorang pelaku UMKM atau Wirausahawan dituntut untuk memiliki semangat berwirausaha yang tinggi, agar mendorong kreatifitas dalam menjalankan dan mengembangkan usaha. Kreatifitas dalam berwirausaha dapat diperoleh seorang pelaku UMKM dengan mengikuti training, pelatihan yang dilaksanakan baik pemerintah maupun swasta dan dengan memperkaya pengetahuan melalui literatur. Namun sayangnya terkadang para pelaku UMKM merasa enggan untuk mengikuti pelatiahan. Oleh karena itu dilaksanakan Pengabdian Kepada Masyarakat dengan metode pendampingan terhadap UMKM Percetakan Usaha Bunda

Measurement of indoor air quality parameters in daycare centres in Kuala Lumpur Malaysia

This paper focuses on the monitoring of indoor air quality parameters, namely: indoor temperature, humidity, velocity, particulate matter, carbon monoxide and carbon dioxide in day care centres. This study selected 15 day care centres located in Kuala Lumpur, Malaysia. These day care centres were categorized as follows: (1) day care centers near an industrial area, (2) day care centers near a main road, and (3) day care centers in a residential area. The obtained data showed that the values for the indoor air quality parameters in all day care centres were still well below the recommended value according to the Department of Safety and Health, Malaysia. The day care centers near an industrial area had the highest value of carbon monoxide, and carbon dioxide as compared to the day care centers near a main road and the day care centers in a residential area. The average concentrations of carbon monoxide, and carbon dioxide in the day care centers near an industrial area were 3.67 ppm and 801.56 ppm respectively. Meanwhile, the carbon monoxide, and carbon dioxide in the day care centers near a main road area and the day care centers in a residential area were 3.13 ppm, 768.22 ppm, 2.92 ppm and 733.70 ppm, respectively

Tensile properties of wood sawdust fibre reinforced epoxy composites

This study conducts an extensive examination of the tensile properties of epoxy resin composites strengthened with wood sawdust fiber. It emphasizes the potential of these composites as a sustainable and cost-effective substitute in the automotive industry. Sawdust particles with a mesh size of 100 and weights of 10%, 20%, and 30% are mixed with epoxy resin in this experiment so that tensile stress and tensile modulus under load can be observed in detail. The fabrication process involved the manual lay-up of tensile specimens. The results indicate that the tensile properties of composites containing 20% sawdust are an unexpected 30% superior to those comprising 10% filler loading. In contrast, micrograph tensile fracture examinations unveiled the presence of agglomeration and air bubble, factors that compromised the accuracy of the findings. The results demonstrate the critical nature of optimizing the sawdust content to attain the optimal equilibrium in the mechanical properties of composites. It is recommended that future applications implement additional microstructural control measures and refine the fabrication process to enhance precision and dependability

Effects of alkali treatments on the tensile properties of pineapple leaf fibre reinforced high impact polystyrene composites

A study on the effects of alkali treatment and compatibilising agent on the tensile properties of pineapple leaf fibre (PALF) reinforced high impact polystyrene (HIPS) composite is presented in this paper. The tensile properties of natural fibre reinforced polymer composites are mainly influenced by the interfacial adhesion between the matrix and the fibres. In this study, several chemical modifications were employed to improve the interfacial matrix-fibre bonding and this resulted in the enhancement of tensile properties of the composites. In this study, the surface modification of pineapple fibre with alkali treatments and compatibilizer were used to improve the adhesion between hydrophilic pineapple fibre and hydrophobic polymer matrix. There are two concentrations of NaOH treatments and compatibilizer used in this study, namely, 2 and 4 wt. %. The results show that the alkali treated fibre and the addition of compatibilising agent in PALF/HIPS composites have improved the tensile strength and tensile modulus of the composites

DETERMINAN HIPERTENSI PADA PEDAGANG PASAR TRADISIONAL PETISAH DI KOTA MEDAN TAHUN 2023

Berdasarkan data WHO menunjukkan sekitar 1,13 miliar orang menyandang hipertensi, artinya 1 dari 3 orang di dunia terdiagnosis hipertensi, pada tahun 2025 diperkirakan akan ada 1,5 miliar orang yang terkena hipertensi, dan diperkirakan setiap tahunnya 10,44 juta orang meninggal akibat hipertensi dan komplikasinya, kasus penderita hipertensi di kota Medan menempati posisike2 tertinggi dengan jumlah kasus sebanyak 89.333 jiwa dengan persentase 18,03%. Tujuan penelitian ini untuk mengetahui determinan hipertensi pada pedagang pasar tradisional Petisah dikota Medan tahun 2023. Penelitian ini menggunakan pendekatan studi crossectional, dengan sampel 94 responden dengan teknik pengambilan accidental sampling, pengolahan data bivatiate menggunakan uji chi-square. Hasil uji statistik menunjukkan tidak ada hubungan kualitas tidur dengan kejadian hipertensi pada pedagang (P-value0,119), ada hubungan stres kerja dengan kejadian hipertensi pada pedagang (P-value0,000), ada hubungan merokok dengan kejadian hipertensi pada pedagang (p-value 0,000), ada hubungan antara obesitas dengan kejadian hipertensi dengan (p-value 0,002), diharapkan kepada dinas kesehatan bekerja sama dengan PD pasar dalam melakukan menyuluhan dan edukasi guna meningkatkan pengetahuan pedagang sehingga dapat meminimalisir kejadian hipertensi pada pedagan

Thermogravimetric analysis (TGA) and differential scanning calometric (DSC) analysis of pineapple leaf fibre (PALF) reinforced high impact polystyrene (HIPS) composites

This paper studied the thermal behaviour of pineapple leaf fibre (PALF) reinforced high impact polystyrene (HIPS) composite. Thermogravimetric analysis (TGA) and differential scanning calorimetric (DSC) analysis were used to measure the thermal characteristic of HIPS/PALF composites. In particular, the TGA analysis was utilized to measure the degradation and decomposition of materials in neat polystyrene, pineapple fibre, and the composites. The measurements were carried out in the temperature of 25°C – 800°C, at a heating rate of 20°C min-1 and the nitrogen gas flow was 50 mL min-1. The temperature of the DSC analysis was programmed to be between 25°C – 300°C. The results from TGA analysis show that the addition of pineapple fibre has improved the thermal stability of the composites as compared to neat HIPS. In addition, the effects of compatibilising agent and surface modification of PALF with alkali treated were also determined and compared

Assessment of children's health and indoor air contaminants of day care centre in industrial area

Background: Carbon dioxide (CO2) is one of the most commonly used indicators of indoor air quality (IAQ) in industrial area. The higher concentration level of CO2 and particulate matter (PM10) in day care centre could affect children’s health. The objective of this study was to assess children’s health symptom, and measure the CO2 and PM10 concentration level as IAQ parameters in different locations of day care centres near the industrial area at Kuala Lumpur, Selangor and Hulu Langat as urban, suburban and rural areas respectively. Methods: The data of children’s health symptom were collected from the distributed questionnaire. Results: The day care centres (DCC) in Kuala Lumpur has the highest number of children’s illness frequency of more than four times annually (11%), followed by the highest number of children who experienced asthma (5.3%), wheezing (3.3%) and coughing (10%). The results of data collection of day care centres in Kuala Lumpur, Selangor and Hulu Langat ranged between 629-830 ppm, 587-823 ppm and 600-830 ppm for CO2 level, and 60.80-78.60 mg/m3, 56.90-80.50 mg/m3 and 59.90-79.10 mg/m3 for PM10 level. The statistical analysis for CO2 level between areas was significantly different (P<0.05). Conclusion: Day care centers in Kuala Lumpur have the highest mean rate of CO2 and PM10 as well as frequency of children’ illness which could identify traffic congestion and less greenery of a densely populated city

ANALISIS YURIDIS PUTUSAN HAKIM DALAM TINDAK PIDANA PENCURIAN SEPEDA MOTOR (PUTUSAN PERKARA NOMOR 1287/PID.B/2023/PN MDN)

Pencurian adalah salah satu dari tindak pidana yang meresahkan masyarakat sehingga perlu di antisipasi dan ditindak lanjuti. Tindak pidana pencurian telah diatur dalam Kitab Undang-undang Hukum Pidana (KUHP) Buku II Bab XXII Pasal 362 hingga Pasal 367. Penelitian ini menggunakan metode penelitian hukum normatif. Penelitian hukum normatif pada dasarnya merupakan suatu kegiatan yang akan mengkaji aspek-aspek (untuk menyelesaikan masalah-masalah yang ada di dalam). hasil penelitian menunjukkan bahwa majelis hakim memutuskan  pidana penjara 4 (Empat) Tahun dan 3 (Tiga) Bulan kepada terdakwa Maka dalam hal mengenai unsur dan disesuaikan dalam fakta di persidang penulis melihat hakim sependapat dengan jaksa penuntut umum yaitu mendakwa tererdakwa I Fransisco terdakwa II Muhammad Rizki terdakwa III Tamim benar telah melakukan tindak pidana pencurian sebagaiman diatur dalam Pasal 363 KUHP.  Hakim setelah menguraikan fakta yang terungkap dipersidangan selanjutnya akan mempertimbangkan mengenai unsur Pasal yang didakwakan oleh jaksa penuntut umum dengan fakta yang terungkap dipersidangan. Dalam perkara Pidana (Pustusan No. 1287/Pid.B/2023/PN Mdn) hakim mepertimbangkam megenai dakwaan yaitu dengan mendakwakan pasal 363 KUHP pencurian dengan pemberatan, yang terjadi ketika seseorang melakukan pencurian dengan menggunakan kekerasan atau ancaman kekerasan terhadap orang, menggunakan senjata, atau bersekongkol dengan orang lain

Monitoring of indoor air quality parameters in the day-care centres in tropical country

Indoor air quality monitoring in various public premises such as school, day-care centre, office and industrial factory buildings has attracting many scientist, researchers as well as academicians. Since most people spends their daily activity outside their house, poor indoor air quality in all sort of location of public places can be related with their health and life comfort as human beings. This paper involved in monitoring the indoor air quality in two location of day-care centre. First location is Federal Territory of Kuala Lumpur, being the capital city of Malaysia. Second location is Selangor, which could be categories as suburban area. Temperature, humidity, air velocity, particulate matter (PM10), carbon monoxide (CO) and carbon dioxide (CO2) were measured as the parameters of indoor air quality in this study. Total 30 day-care centres in Kuala Lumpur and Selangor were selected for this study. The monitoring was conducted during the day-care centre operating hours from 9am to 5pm (8hours) using IAQ meter TSI 8762 for measurement of temperature, humidity, CO and CO2, Dust Trak TSI 8520 for the measurement of PM10 and VeloCalc TSI 9555 for the measurement of air velocity. The CO, CO2and PM10 levels indicated that the city of Kuala Lumpur has higher pollutant levels than suburban area or Selangor