Sebelas Maret University

About: Sebelas Maret University is a education organization based out in Surakarta, Indonesia. It is known for research contribution in the topics: Population & Public health. The organization has 10901 authors who have published 10832 publications receiving 33057 citations. The organization is also known as: Universitas Negeri Surakarta & Universitas Sebelas Maret.

Pembelajaran kimia berbasis multiple representasi ditinjau dari kemampuan awal terhadap prestasi belajar laju reaksi siswa sma negeri i karanganyar tahun pelajaran 2011/2012

Abstract: Penelitian ini bertujuan untuk: (1) Membandingkan prestasi belajar siswa pada materi Laju Reaksi menggunakan pembelajaran kimia berbasis multiple representasi dan konvensional , (2) Membandingkan prestasi belajar siswa pada materi Laju Reaksi dengan kemampuan awal tinggi dan kemampuan awal rendah, (3) Mengetahui interaksi antara pembelajaran yang digunakan dengan kemampuan awal siswa terhadap prestasi belajar siswa pada materi Laju Reaksi. Penelitian ini menggunakan metode quasi eksperimental dengan rancangan penelitian desain faktorial 2x2. Sampel diambil dengan teknik cluster random sampling. Teknik pengumpulan data menggunakan metode tes objektif untuk prestasi belajar kognitif, metode angket untuk prestasi belajar afektif dan metode observ asi untuk prestasi belajar psikomotor. Analisis data menggunakan Analisis Variansi Dua Jalan Sel Tak Sama. Berdasarkan hasil penelitian disimpulkan bahwa: (1) prestasi belajar siswa pada pembelajaran multiple representasi lebih tinggi daripada pembelajaran konvensional pada materi Laju Reaksi. (2) prestasi belajar siswa dengan kemampuan awal tinggi lebih tinggi daripada siswa dengan kemampuan awal rendah pada materi Laju Reaksi. (3) tidak ada interaksi antara pembelajaran multiple representasi dan konvensional dengan kemampuan awal siswa terhadap prestasi belajar kognitif, afektif, dan psikomotor siswa pada materi Laju Reaksi. Kata Kunci: Pembelajaran kimia, Multiple representasi, kemampuan awal

A genre analysis of promotional texts in an indonesian batik industry

Abstract: This study explored sales promotion letters (SPLs) and company profiles (CPs) of two prominent batik companies in Solo, Central Java, Indonesia This essay draws its data from the most important primary source of information on sales promotion letters and company profiles namely words, phrases, and clauses taken from the SPLs and CPs of batik written in Indonesian Secondary sources were also consulted in this research, among these transcribed data obtained from in-depth interviews with the text writers and buyers Three SPLs and two batik CPs were analyzed In addition, two informants (marketing and promotion managers) typifying the text production perspective and two buyers typifying the text consumption perspective were interviewed This research was guided by theories of genre analysis which focuses on patterns of rhetorical organization and genre-specific language features This study employed the multi-dimensional and multi perspective model of analysis focusing on textual, socio-cognitive and ethnographic aspects of the texts This study concludes that the strong Javanese cultural influence has made the underlying intention of gaining profits to be less explicitly stated Secondly, the textual analysis and the in-depth interviews supported the view that CPs of batik had been ideally used to create a favorable image of the company Thirdly, the most distinctive feature that differentiated establishing credentials in the Indonesian batik business context had been the utilization of a sense of moral obligation to preserve native culture Fourthly, the chemistry between writers and readers of SPLs and CPs built a strong foundation for mutual understanding and thus paved the way for making purchases To conclude, this study has shown how the wider culture and the culture of the discourse community has contributed to the framing and formatting of SPLs and CPs of batik in terms of lexico-grammar, cognitive structuring, intertextuality and interdiscursivity

Review: Biodiversity conservation strategy in a native perspective; case study of shifting cultivation at the Dayaks of Kalimantan

Abstract: Abstrak. Setyawan AD. 2010. Review: Strategi konservasi biodiversitas dalam pandangan suku asli; studi kasus perladangan berpindah Suku Dayak di Kalimantan. Nusantara Bioscience 1: 97-108. Suku asli umumnya konservasionis sejati, mereka membangun strategi konservasi sumberdaya alam hayati dan lingkungan yang berkelanjutan. Dayak adalah suku asli Kalimantan yang telah tinggal selama ribuan tahun dan menggunakan sistem perladangan berpindah untuk mengelola hutan ulayat, karena tanah Kalimantan miskin hara mineral, dimana keberadaan fosfor menjadi faktor pembatas budidaya tanaman pangan. Di hutan tropis, kandungan terbesar fosfor tersimpan dalam pepohonan, sehingga untuk melepaskannya dilakukan pembakaran hutan. Hara yang terlepas ke dalam tanah dapat digunakan untuk bertanam padi gogo, hingga terserap habis, lalu peladang membuka hutan baru, sedangkan lahan lama ditinggalkan (bera) agar menjadi hutan kembali (selama 20-25 tahun). Pembukaan lahan yang berurutan, menyebabkan terbentuknya mosaik-mosaik lahan dengan umur suksesi dan keanekaragaman hayati beragam. Proses ini seringkali digabungkan dengan sistem agroforestri (kebun hutan multikultur), dimana ladang yang hendak ditinggalkan ditanami berbagai pohon berguna yang dapat terintegrasi pada ekosistem hutan, terutama karet dan buah-buahan. Sistem perladangan berpindah sering dikambinghitamkan sebagai faktor utama degradasi dan kebakaran hutan, namun dalam 300 tahun terakhir sistem ini berdampak kecil pada kerusakan hutan. Namun, produktivitas sistem ini relatif rendah dan subsisten, sehingga tidak sesuai dengan pertanian modern dimana produktivitas harus tinggi, hasil panen harus terukur, masal dan kontinyu, serta terkait dengan pasar. Peningkatan penduduk dan perkembangan industri kehutanan, perkebunan, pertambangan, dan lain-lain telah mempersempit luasan hutan ulayat untuk perladangan berpindah, sehingga masa bera diperpendek (5- 15 tahun) dan lahan terdegradasi menjadi padang alang-alang. Di masa depan, perladangan berpindah tetap menjadi salah satu pilihan suku Dayak untuk memenuhi kebutuhan padi, namun agroforestri perlu dikembangkan karena bernilai ekonomi lebih tinggi. Kata kunci: perladangan berpindah, agroforestri, Dayak, Kalimantan, konservasi, keanekaragaman hayati.

Metformin Modulates Cyclin D1 and P53 Expression to Inhibit Cell Proliferation and to Induce Apoptosis in Cervical Cancer Cell Lines

Abstract: Background: Cervical cancer is one of the most prevalent gynecological cancers worldwide and contributes in high mortality of Indonesian women. The efficacy of chemotherapy as a standart therapy for cervical cancer decreases because it frequenly rises adverse effects. Recent studies have found that metformin has a potential anticancer effect mostly through reduction of cyclin expression and activation of Activated Adenosine Monophosphate Kinase (AMPK). This study aimed to investigate the effect of metfomin on expression of cyclin D1 and p53 and apoptosis in HeLa cancer cell line. Methods: HeLa cells were treated with various doses of metformin and doxorubicin as a positive control. Cytotoxic effect of metformin was determined using the MTT assay. Immunocytochemistry was used to assess cyclin D1 and p53 expression and apoptosis levels of treated HeLa cells were analyzed using flowcytometry. Data of cyclin D1 expression was statistically analyzed using the Kruskal-Wallis test followed by the Tamhane test, whilst ANOVA and Tukey post Hoc tests were used to analyze data of p53 and apoptosis level. The significant value was p< 0.05. Results: Metformin was able to inhibit proliferation of HeLa cells with IC50 60 mM. HeLa cells treated with 60 and 120 mM metformin had lower cyclin D1 expression than HeLa cells treated without metformin and reached a significant difference (p= 0.001). Moreover, 30 mM or higher doses of metformin increase significantly p53 expression (p< 0.001). Induction of apoptosis was observed in HeLa cells treated with all doses of metformin and reached statistically difference (p= 0.04 and p < 0.001). Conclusion: Metformin can modulate cyclin D1 and p53 expression in HeLa cancer cell line, leading to inhibition of cell proliferation and induction of apoptosis. Other cyclin family members, CDK inhibitors and AMPK signaling should be further investigated in order to know mechanism of metformin action.

Purchase intention: implementation theory of planned behavior (Study on reusable shopping bags in Solo City, Indonesia)

Abstract: Plastic shopping bags have been used in everyday life. In fact, plastic bags production from polyethylene will cause greenhouse gas emission when broken down into small pieces, and hence they contribute to anthropogenic climate change sources. The aim of this study is to examine the effects of environmental knowledge, perceived value and price, product appearance, attitude, subjective norm, perceived behavioral control and intention to purchase reusable shopping bags. The purposive sampling method was used in choosing respondents and the criteria were the respondents who already knew the reusable bag product and had the intention to buy it. Overall, 110 respondents were considered fit to meet the predefined criteria and fill out the questionnaire completely. The instrument testing and also hypothesis testing were tested by Structural Equation Model-Partial Least Square (SEM-PLS). With regard to Hypothesis Testing, the level of confidence was 95% while the rule of thumb for t-test was even having more than 1.96. The results found that environmental knowledge has a positive effect toward attitude, perceived price on influenced attitude, perceived value affecting attitude and product appearance impacted to the attitude (t-students' value: 2.495; 3.325; 3.932; and 10.028 successively). Furthermore, attitude, subjective norm, and perceived behavioral control influenced the intention to buy. (t-students' value: 3.907; 2.292; 2.932 respectively).