Sintesis Material SrTi1-xVxO3 (x= 0; 0,05; 0,1; 0,15) dengan metode lelehan garam campuran NaCl-KCl

INDONESIA : Senyawa perovskit SrTiO3 dilaporkan berpotensi digunakan sebagai material fotokatalis dengan energi celah pita 3,2 eV sehingga hanya bekerja pada daerah sinar UV. Salah satu strategi yang dapat dilakukan untuk menurunkan energi celahh pita material fotokatalis adalah strategi pendopingan menggunakan logam transisi vanadium (V). Penelitian ini telah dilakukan sintesis senyawa SrTi1-xVxO3 (x= 0; 0,05; 0,1; 0,15) dengan metode lelehan garam NaCl-KCl. Hasil penelitian ini diperoleh difraktogram sampel yang menunjukkan senyawa SrTi1-xVxO3 (x= 0; 0,05; 0,1; 0,15) telah berhasil disintesis dan ditemukan pengotor berupa TiO2 rutil pada x= 0 serta SrCO3 pada x= 0 dan x= 0,15. Mikrograf SEM menunjukkan morfologi plate-like yang cenderung teraglomerasi. Spektrum UV-Vis DRS menunjukkan bahwa SrTiO3 mengalami penurunan energi celah pita setelah didoping logam transisi V dari 3,2 ke 2,95 eV. Penurunan energi celah pita akan semakin besar seiring dengan pergeseran panjang gelombang lebih mendekati daerah sinar tampak dan bertambahnya konsentrasi dopan. ENGLISH : The perovskite SrTiO3 compound is reported to have the potential to be used as a photocatalyst material with a band gap energy of 3.2 eV so that it only works in the UV light. One strategy that can be implemented to reduce the energi celah pita of photocatalyst materials is a doping strategy using the transition metal vanadium (V). In this research, the synthesis method for the SrTi1-xVxO3 compound (x= 0; 0.05; 0.1; 0.15) uses the melting method of NaCl-KCl salt. The results of this study obtained a sample diffractogram which showed that the compound SrTi1-xVxO3 (x= 0; 0.05; 0.1; 0.15) had been successfully synthesized and impurities were found in the form of TiO2 rutile at x=0 and SrCO3 at x=0 and x =0.15. SEM micrographs showed a plate-like morphology that tends to agglomerate with the constituent elements in the form of Sr, Ti, V and O. The UV-Vis DRS spectrum showed that SrTiO3 decreases its energi celah pita after being doped with transition metal V from 3.2 to 2.95 eV. The decrease in band gap energy will be greater as the wavelength shifts closer to the visible region and the dopant concentration increases. ARABIC : يرد مستحضر بيروفسكايت (SrTiO3) ان يحتمل ان يستخدم مادة المحفز الضوئي بطاقة الشق الرباط ٣،٢ (eV) حتى يعمل في حول ضياء (UV) فقط. إحدى الستراتيجيات التي تستطيع ان تفعل لإنزال طاقة الشق الرباط مادة المحفز الضوئي هي ستراتيجية المنشطة تستخدم الفلز الإنتقالي الفاناديوم (V). يستخدم منهج صناعية المستحضر(٠: ٠،٠٥:٠،١: ٠،١٥) x (SrTi1-xVxO3) بمنهج الانصهار الملح (NaCl-KCl). تنال حصيلة البحث حيود النموذج الذي يدل مستحضر (٠: ٠،٠٥: ٠،١: ٠،١٥) x (SrTi1-xVxO3) نجح صناعية وانكشف الواسخ مثل (TiO2 rutil) في (x) = ٠ و(SrCO3) في (x)= ٠ و(x) = ٠،١٥. تدل صورة مجهرية (SEM) مورفولوجيا (plate-like) الذي يجنح إلى التجمعات بعناصر المؤلف مثل (Sr, Ti, V dan O). يدل طيف الضوء (UV-Vis DRS) أن (SrTiO3) يكابد ان ينزل طاقة الشق الرباط بعد منشطة الفلز الإنتقالي (V) من ٣،٢ إلى ٢،٩٥ (eV). يرتفع إنزال طاقة الشق الرباط كثيرا بتحويل طول الموج وأقرب حول ضياء الصارخ تمشى مع زياد اكتراث دوفان

Analisis Komparatif Produktivitas Tanaman Aren di Kabupaten Lima Puluh Kota

Lima Puluh Kota Regency has a strong economic foundation in the agricultural sector, with sugar palm (Arenga pinnata) as its primary commodity. Sugar palm trees are widely distributed across 10 sub-districts, but the concentration of sugar production is centered in Lareh Sago Halaban, Mungka, Gunuang Omeh, Bukik Barisan, and Suliki sub-districts. This study aims to analyze the differences in sugar palm productivity among these five sub-districts. Data on productive land area and palm sap production from 2019 to 2023 were obtained from the Central Statistics Agency (BPS) of Lima Puluh Kota Regency as secondary data for this study. The hypothesis regarding a significant difference in productivity between sub-districts testes using a One-Way ANOVA analysis.. The results showed a significant difference in productivity between Mungka Sub-district and Gunuang Omeh Sub-district. However, no significant differences were found in other sub-districts. Nevertheless, the average production of palm sap varied among the five sub-districts

Etnobotânica de plantas medicinais comercializadas por raizeiros em uma cidade do sertão da Bahia, Brasil / Ethnobotanics of medicinal plants from herb sellers operating in a city in the hinterland of Bahia, Brazil

O uso e comércio de partes vegetais de plantas medicinais representam uma atividade importante das práticas empíricas dos saberes tradicionais. Este trabalho objetivou registrar as indicações terapêuticas, forma de preparo e restrição de uso das plantas medicinais comercializadas pelos raizeiros da feira livre do município de Paulo Afonso-BA, como antimicrobianas. A coleta de dados incluiu listagem livre, entrevistas abertas e semi-estruturadas. A maior parte dos raizeiros é do gênero masculino, com idade superior a quarenta anos. São comercializadas doze espécies vegetais na forma de chá, garrafada, (decocto/ infusão), óleo e banho, onde a casca é a parte vegetal mais utilizada. As plantas Ximenia americana L. (ameixa), Anacardium occidentale L. (cajueiro vermelho), Myracrodruon urundeuva Allemão (aroeira), foram às espécies mais citadas e indicadas para tratamento de infecções. Existe a hipótese de o raizeiro comercializar um vegetal, na forma desidratada, com o nome de outro, não sendo garantida a sua procedência. Os raizeiros que comercializam as plantas medicinais aprenderam a utilizar as plantas através dos pais e os mesmos adquirem os vegetais sem sazonalidade, através de fornecedores, com escassos hábitos de associação com outros medicamentos. Trabalhos futuros na perspectiva da fitoquímica poderão contribuir para produção de novos fármacos e com base nestes dados consolidar programas políticos de manejo sustentável e mais eficientes à conservação dessas espécies e dos ecossistemas onde elas vivem, especialmente por apresentarem riscos de extinção

Strategi Pemasaran Gula Semut Aren Guseta (Kelompok Tani Mutiara Kecamatan Lareh Sago Halaban Kabupaten Limapuluh Kota)

Mutiara Farmer’s Group exist since 2015 and become the first farmer’s group in Limapuluh Kota regency produced palm sugar. This product had brand called by Guseta. Becoming the first palm sugar product, it was not made this product known by public. This product need some analysis to used for make some marketing strategic. The tools are IFAS matrix, EFAS matrix, IE matrix, SWOT matrix, and QSPM matrix for make the best recommendation of marketing strategy for Guseta. The result of using the tools are had the total score of the internal key factor are 2.96, with the biggest strength are the product have “PIRT” and this product is chemical free and also sor the biggest weakness is less of distribution. For score total of the eksternal key factor are 3.18, with the biggest opportunity is technology and information development, and for the biggest threat is depends on weather. In IE matrix show that the marketing of Guseta in cell II which is in grow built. The result of SWOT analysis the farmer’s group had eight alternative strategic that can be chosen by the farmer’s group. Based on the results of the QSPM matrix analysis, from seven alternative strategies there is an alternative strategy that is prioritized by the farmer’s group, spread the information about Guseta is the healthy lifestyle with TAS score of 5.95

Etnobotânica de plantas medicinais comercializadas por raizeiros em uma cidade do sertão da Bahia, Brasil / Ethnobotanics of medicinal plants from herb sellers operating in a city in the hinterland of Bahia, Brazil

O uso e comércio de partes vegetais de plantas medicinais representam uma atividade importante das práticas empíricas dos saberes tradicionais. Este trabalho objetivou registrar as indicações terapêuticas, forma de preparo e restrição de uso das plantas medicinais comercializadas pelos raizeiros da feira livre do município de Paulo Afonso-BA, como antimicrobianas. A coleta de dados incluiu listagem livre, entrevistas abertas e semi-estruturadas. A maior parte dos raizeiros é do gênero masculino, com idade superior a quarenta anos. São comercializadas doze espécies vegetais na forma de chá, garrafada, (decocto/ infusão), óleo e banho, onde a casca é a parte vegetal mais utilizada. As plantas Ximenia americana L. (ameixa), Anacardium occidentale L. (cajueiro vermelho), Myracrodruon urundeuva Allemão (aroeira), foram às espécies mais citadas e indicadas para tratamento de infecções. Existe a hipótese de o raizeiro comercializar um vegetal, na forma desidratada, com o nome de outro, não sendo garantida a sua procedência. Os raizeiros que comercializam as plantas medicinais aprenderam a utilizar as plantas através dos pais e os mesmos adquirem os vegetais sem sazonalidade, através de fornecedores, com escassos hábitos de associação com outros medicamentos. Trabalhos futuros na perspectiva da fitoquímica poderão contribuir para produção de novos fármacos e com base nestes dados consolidar programas políticos de manejo sustentável e mais eficientes à conservação dessas espécies e dos ecossistemas onde elas vivem, especialmente por apresentarem riscos de extinção.</jats:p