University of Surabaya

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    Stabilitas Fisikokimia dan Penghantaran Polisakarida Acemannan dalam Body Scrub Ekstrak Lidah Buaya: Variasi Tween 80 dan Gliseril Monostearat

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    Lidah buaya memiliki manfaat menutrisi dan melembapkan kulit karena kandungan polisakarida acemannan sebagai humektan, sehingga sering digunakan dalam produk perawatan tubuh, termasuk body scrub. Stabilitas krim body scrub dipengaruhi komposisi emulgator tween 80 dan gliseril monostearat yang menjaga homogenitas dan stabilitas produk selama penyimpanan. Penelitian ini bertujuan untuk menganalisis pengaruh variasi konsentrasi emulgator terhadap stabilitas dan penghantaran acemannan dalam body scrub lidah buaya. Body scrub diformulasikan dalam tiga formula yang mengandung ekstrak lidah buaya, rice bran oil, virgin coconut oil, microbeads polyethylene, dan kombinasi emulgator tween 80 dan gliseril monostearat dengan konsentrasi 4%, 5%, dan 6% untuk formula I, II, dan III. Pengamatan stabilitas dilakukan pada hari ke-0, 7, 14, dan 30 untuk parameter organoleptis, berat jenis, tipe emulsi, ukuran droplet, viskositas, sifat alir, daya sebar, dan pH. Penghantaran zat aktif berkhasiat diamati dari parameter kadar acemannan. Ketiga formula body scrub memenuhi spesifikasi. Variasi konsentrasi emulgator mempengaruhi ukuran droplet dan stabilitas body scrub. Body scrub formula III dengan konsentrasi total emulgator 6% merupakan formula terbaik yang stabil pada keseluruhan parameter termasuk kadar acemannan tertinggi, serta keunggulan pada karakteristik ukuran droplet yang lebih kecil

    Acceptance and Commitment Therapy Effectivity towards Parents Stress – Meta Analysis

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    Background: Stress in parents inhibits their abilities to optimize parenting role. Acceptance and Commitment Therapy (ACT) helps parents to embrace their feelings and thoughts to be more committed in achieving well-being. Objective: This study aims to analyze the effectiveness of ACT to reduce stress in parents. Method: This research use meta-analytical method from RCT studies to provide in-depth analysis. Results: Result shows a large effect of ACT toward stress intervention within parents particularly in group-based format (I2 = 93.01%). Conclusion: This research has given significance proof to use ACT in order to reduce stress within parenting context. Further research should be focused on ACT intervention in Asian parents context with RCT, especially Indonesia

    Analisis Strategi Bisnis pada PT Ultrajaya Milk Industry & Trading Company Tbk

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    Penelitian ini bertujuan untuk menganalisis strategi bisnis PT Ultrajaya Milk Industry & Trading Company Tbk. Perusahaan ini merupakan pemimpin pasar dalam industri susu di Indonesia dengan pangsa pasar 36% pada produk susu UHT. Studi ini mengkaji faktor eksternal dan internal yang mempengaruhi keputusan strategis perusahaan. Hasil penelitian menunjukkan bahwa Ultrajaya perlu fokus pada penetrasi pasar dan pengembangan produk untuk mempertahankan keunggulan kompetitifnya di tengah meningkatnya persaingan dari merek lokal dan internasional. Perusahaan juga perlu mengatasi tantangan keuangan sambil memanfaatkan jaringan distribusi yang kuat dan pengakuan merek untuk mempertahankan posisi pasar. Analisis diperkuat dengan data dari laporan tahunan 2023 yang mencakup pertumbuhan pendapatan, strategi investasi, dan manajemen risiko

    Strategic Analysis PT Astra International Tbk (ASII)

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    Penelitian ini bertujuan untuk mengetahui strategi analysisPT Astra Internasional TBK (ASII). Data yang digunakan dalam penelitian adalah data sekunder, yang kami peroleh dari hasil resume dari beberapa artikel. Hasil penelitian menunjukkanbahwa Berdasarkan hasil analisa pada matching stagedapat disimpulkan bahwa Astra mengambil strategi agresif, karena Astra mampu menangani dan melakukan manajemen pada ketujuh unit bisnisnya. Astra juga dapat memanfaatkan pertumbuhan market sharedari semua sektor untuk meningkatkan daya saing Perusahaan dan menjadi pemimpin pasar. Sehingga Astra sendiri memilih strategi agresif. Hal ini sesuai SWOT, IE, Grand Strategy, BCG, dan SPACE

    Dukungan Sosial pada Stres Pengasuhan Orang Tua dengan Anak Tunarungu: Sebuah Tinjauan Literatur Sistematis

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    Orang tua punya peran besar dalam menentukan arah perkembangan anak, sehingga orang tua yang mengalami stres pengasuhan akan berdampak pada perkembangan anaknya. Hal ini termasuk orang tua dengan anak tunarungu, yang dampaknya tidak hanya pada anaknya tapi juga pada orang tua tersebut. Dukungan sosial adalah salah satu cara untuk mengurangi stres pengasuhan pada orang tua dengan anak tunarungu. Studi ini bertujuan menganalisis bentuk dukungan sosial yang dibutuhkan oleh orang tua dengan anak tunarungu untuk mengurangi stres pengasuhan. Desain penelitian ini berupa metode kajian literatur sistematis dengan panduan PRISMA. Skrining artikel dengan panduan PRISMA menghasilkan enam studi dari tahun 2014-2023 yang meneliti hubungan dukungan sosial dengan stres pengasuhan orang tua dengan anak tunarungu. Hasil penelitian ini adalah dukungan sosial berbentuk informasi paling dibutuhkan, dengan preferensi sumber dukungan (formal dan informal) yang berbeda antara ibu dan ayah. Meski demikian, dukungan dari pasangan dinilai lebih mampu mengurangi stres pengasuhan

    The effect of behavioral factors on investment decision towards stock market between Indonesia,Japan,and Thailand

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    Purpose – This research consists of Behavioral Finance where it is focused on cognitive bias factors influence on Investment Decision with using the scope of research in three countries which are Indonesia, Thailand, and Japan. Design/methodology/approach – the method of research is categorized as quantitative research where it uses a questionnaire with 232 respondents. Then, the data is processed and analyzed using software SmartPLS 3.0. Findings – The findings reveal that overconfidence and availability bias have a significant positive effect on investment decisions, while herding behavior has a negative effect and anchoring bias shows no significant influence. Research limitations/implications – This research is limited by its relatively small sample size of 232 respondents across three culturally and economically diverse countries, which may affect the generalizability of the findings. Practical implications – The strong influence of overconfidence and availability bias highlights the need for improved investor education focused on risk awareness and critical analysis, especially in the digital era. Also, to prevent irrational behavior driven by herding, financial institutions and regulators should enhance collective financial literacy and promote transparent, data-driven decision-making. Originality/value – This result provides reasonable insight into why there is a difference in results between each country supported with the data and results from the previous research that have been done before

    Development of Captopril Analysis Method in Traditional Antihypertensive Medicine by Densitometry

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    Introduction: The utilisationof traditional medicine to address health concerns is on the rise. One such traditional medicine product is antihypertensive herbal medicine. The Indonesian Food and Drug Authority (BPOM) has identified the presence of medicinal chemicals in traditional medicinal products, which has the potential to pose a significant risk to consumers. Captopril is one of the antihypertensive drugs that may be added as BKO in herbal medicine.Aims: The objective of this study was to develop a method for the analysis of the chemical content of captopril in antihypertensive herbs sold online under the following brands: A, B, C, and D. Method: The analytical method used was TLC-densitometry, utilising a mobile phase of chloroform: methanol (7:3). Result: The results show that the method used has fulfilled the requisite validation criteria for linearity, limit of detection (LOD), limit of quantitation (LOQ), accuracy, and precision parameters. The results of the analysis demonstrated that the sample did not contain any detectable quantities of captopril. Conclusion: The developed method has been proven to be effective for the analysis of captopril in antihypertensive herbal products and it can be confirmed that there is no presence of captopril medicinal chemicals in samples from brands A, B, C, and

    Penerapan Pemeliharaan Produktif Total (Total Productive Maintenance)

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    Buku Total Productive Maintenance (TPM) ini merupakan panduan praktis bagi pembaca yang ingin mempelajari terkait dengan TPM. Buku ini memberikan penjelasan ringkas yang disertai dengan contoh penerapan terkait dengan delapan pilar TPM. Buku juga dapat dijadikan sebagai buku rujukan untuk mahasiswa peserta mata kuliah Manajemen Perawatan

    Actual performance evaluation of a 4.5 kWp residential on-grid PV system in Surabaya, Indonesia

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    This study evaluates the actual performance of a 4.5 kWp on-grid photovoltaic (PV) system installed on a residential building in Surabaya, Indonesia. The research aims to assess the system’s energy output under real operating conditions, providing valuable insights for residential PV deployment. Data was collected through an online monitoring system, recording daily energy production ranging from 8.0 kWh to 24.0 kWh. The total annual energy generation was approximately 6,122 kWh, resulting in an average specific energy yield of 1,360 kWh/kWp. The findings indicate that residential rooftop PV installations in Indonesia can contribute significantly to household energy needs and carbon reduction efforts. This study highlights the practical implications for homeowners, policymakers, and researchers, offering empirical data to support policy development and investment decisions in solar energy

    How to achieve tax compliance of small and medium enterprises (SMEs) by university’ tax centre: A perspective of the slippery slope theory

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    Our research aims to explore the multifaceted reasons behind the prevalent issue of tax noncompliance among SMEs and the ways to solve such issues through the university’s tax center. We interviewed lecturers who specialize in taxation, heads of financial departments of SMEs, and SME owners. Our study reveals that tax noncompliance among SMEs stems from a blend of factors, including a lack of awareness and understanding of tax regulations, the overwhelming complexity of tax laws, and an educational gap between SME owners’ formal education and the practical knowledge required for effective tax management. This issue is compounded by rapidly changing tax laws, limited resources, and day-to-day operational demands. Additionally, distrust in government institutions, influenced by perceptions of corruption or inefficiency, and a culture of tax avoidance within some business communities further exacerbate noncompliance. The perceived complexity and administrative burden of tax filing, financial constraints, and fear of making mistakes also play significant roles. In this sense, we found that university’s tax centers are crucial in addressing these challenges by offering educational programs, personalized consulting services, and fostering a culture of compliance, thus supporting SMEs and promoting a broader culture of tax compliance

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