PERFORMANSI DESTILASI AIR BENTUK DASAR, REFLEKTOR DAN PARABOLA

Performansi suatu alat destilasi surya dinyatakan oleh efisiensi dan jumlah air bersih yang dapat dihasilkan persatuan waktu dan luas alat destilasi. Banyak faktor yang mempengaruhi jumlah air destilasi yang dapat dihasilkan diantaranya: keefektifan absorber dalam menyerap energi surya, keefektifan kaca dalam mengembunkan uap air, ketinggian air yang ada di alat destilasi, jumlah energi surya yang datang dan temperatur air masuk kedalam alat destilasi.Tujuan penelitian ini adalah meneliti perbedaan perfomansi yang dihasilkan alat destilasi air energi surya yang menggunakan reflektor bentuk, reflektor dan r parabola. Destilator berukuran panjang 1 meter dan lebar 0,5 meter. Destilator yang digunakan sebanyak tiga buah, satu destilator reflektor, satu destilator parabola dan satu destilator bentukdasar. Alat destilasi dilengkapi dengan pengatur ketinggian air di dalam destilator, Ketinggian air di dalam destilator divariasikan setinggi 5 mm, 7,5 mm, dan 10 mm.Hasil penelitian menunjukkan air destilasi maksimum yang dihasilkan sebesar 0,850 liter selama 2 jam dengan efisiensi rata-rata 49,2% dihasilkan destilator dengan mengguakan reflektor dengan ketinggian air destilasi setinggi 5 mm. Hasil air destilasi maksimum pada ketinggian air destilator 10 mm sebesar 0,20 liter selama 2 jam dihasilkan destilator dengan menggunakan kolektor parabola silinder

PENERAPAN METODE DEMONSTRASI UNTUK MENINGKATKAN MOTIVASI BELAJAR DAN HASIL BELAJAR SISTEM PENDINGIN

This study aimed to know (1) the use of demonstration method could improve learning motivation of cooling system and (2) the use of demonstration method could improve learning motivation. This study was an action research. Data collection techniques used documentation and test. Data analysis technique used descriptive analysis and quantitative to know percentage of learning achievement. This study shows that (1) the use of demonstration method could improve learning motivation of cooling system. The students were used to learn by using demonstration method and they showed their activeness in learning process. (2)  The use of demonstration method could improve learning motivation. The average score of pre cycle was 56.25, cycle I was 63.28, cycle II was 72.81, and cycle III was 81.56

Karakterisasi Morfologi dan Isoenzim Aksesi Pamelo [Citrus maxima (Burm.) Merr.] Berbiji dan Tidak Berbiji {Morphological and Isoenzyme Characterization of Seeded and Seedless Pummelo [Citrus maxima (Burm.) Merr.] Accessions}

Penelitian ini bertujuan untuk mengevaluasi karakter morfologi dan biokimia dengan isoenzim aksesi pamelo berbiji dan tidak berbiji asal Sumedang, Kudus, Pati dan Magetan. Karakter morfologi yang berperan dalam pengelompokan aksesi pamelo adalah tebal epikarp, pinggiran helai daun, panjang kantong jus, warna kulit buah masak, lebar sayap daun dan bentuk buah, sedangkan karakter isoenzim adalah MDH (Rf 0.11 dan 0.14) dan ACP (Rf 0.24 dan 0.33). Pita ACP Rf 0.24 dapat dijadikan penanda untuk membedakan aksesi berbiji dan tidak berbiji.  Dendrogram berdasarkan karakter morfologi memisahkan kelompok aksesi berbiji dan tidak berbiji pada koefisien kemiripan 0.63, dan berdasarkan isoenzim pada koefisien kemiripan 0.49. Dendrogram berdasarkan karakter morfologi dan isoenzim dapat membedakan antara aksesi berbiji, potensial tidak berbiji dan tidak berbiji. Hasil pemetaan komponen utama kongruen dengan dendrogram, yaitu dapat memisahkan aksesi berbiji maupun tidak berbiji, berdasarkan karakter morfologi, isoenzim maupun kombinasinya.KeywordsCitrus maxima (Burm.) Merr.; Morfologi; Isoenzim; Asam fosfatase; Koefisien kemiripanAbstractIndonesia has many pummelo accessions with various shape, size, color, taste, and seeds number of fruit. Up to now characters that can distinguish seeded and seedless pummelo accessions are not yet known well. The objective of this work was to evaluate morphological and biochemical (isoenzyme) characters of seeded and seedless pummelo accessions originated from Sumedang, Pati, Kudus, and Magetan. Morphological identification used vegetative and reproductive component of pummelo tree, based on IPGRI descriptor list. Isoenzyme analysis was done by using young leaves and esterase (EST), malate dehydrogenase (MDH), peroxidase (PER), acid phosphatase (ACP), as well as glutamate oxaloasetate transaminase (GOT) isoenzymes. Morphological characters that contributed in grouping pummelo accessions were epicarp thickness, leaf lamina margin, vesicle length, epicarp color, petiole wing width and fruit shape, while isoenzyme characters were MDH (Rf 0.11 and 0.14) and ACP (Rf 0.24 and 0.33). Fruit shape (pyriform), fruit axis (hollow), seeds number (<10) per fruit, and ACP band at Rf 0.24 could be used as marker to differentiate seeded and seedless pummelo accessions. Separation between seeded and seedless accessions can be done based on morphological characters occured at similarity coefficient of 0.63 while on isoenzyme characters occured at similarity coefficient of 0.49. Dendrogram based on combined morphological and isoenzyme data was able to differentiate seed bearing and seedless pummelo accessions. Principal component analysis results was congruent with that of morphological, isoenzyme, and combination of them

RUANG PROYEKTIF KOMPLEKS 〖CP〗^n ADALAH MANIFOLD KOMPLEKS

The purpose of this paper to determine the complex projective space  as a complex manifold is to calculate the cohomology of the coherent sheaves of . The research method in this paper is to construct an -dimensional complex projective space, namely  and then the n-dimensional complex projective space, namely , is a complex manifold. The result of this research is the -dimensional complex projective space, namely is a complex and compact manifold

Perbandingan Pola Pita Isoenzim 15 Aksesi Pamelo (Citrus maxima (Burm.) Merr.) Berbiji dan Tidak Berbiji dan Hubungan Kekerabatannya

ABSTRACTThere are many pummelo accessions in Indonesia, some of them are seedless. The objective of this work  was  to  compare  isoenzyme  banding  patterns  and to  assess  the  genetic  similarity  of  seeded  and seedless pummelo accessions. Electrophoresis analysis of proteins extracted from leaf tissues was uti lized to detect polymorphisms i.e. five isoenzymes  (esterase (EST), peroxidase (PER), malate dehydrogenase (MDH), acid phosphatase (ACP) and aspartate amino transferase (AAT). Based on principal component analysis, characters having the  main role in classifying pummelo accessions were MDH (Rf 0.14 and Rf 0.27)  and  ACP  (Rf  0.24  and  Rf  0.33). The accessions  showed  high  range  genetic  similarity  (28.6-94.7%), and at similarity coefficient 0.53  they  were classified into seeded and seedless  groups. It was concluded  that  isoenzymes  can  be  used  as  markers  in  differentiating seeded  and  seedless  pummelo accessions.Key words: genetic similarity, electrophoresis, marker, principal component analysis, polymorphismABSTRAKIndonesia memiliki banyak aksesi pamelo, baik yang berbiji maupun tidak berbiji. Penelitian ini bertujuan  untuk  membandingkan  pola  pita  isoenzim dan  mengetahui  keanekaragaman  genetik  antar aksesi  pamelo  berbiji  dan tidak  berbiji.  Analisis  isoenzim untuk  mendeteksi  polimorfisme dilakukan dengan  cara  elektroforesis  menggunakan  lima  sistem  enzim, yaitu  esterase  (EST),  peroksidase  (PER), malat dehidrogenase (MDH), asam fosfatase (ACP) dan aspartat amino transferase (AAT). Hasil analisis komponen utama  menunjukkan  bahwa  karakter  yang  berperan  penting  dalam pengelompokan  aksesi pamelo adalah MDH (Rf 0.14 dan Rf 0.27) dan ACP (Rf 0.24 dan Rf  0.33). Tingkat kesamaan genetik aksesi pamelo berkisar antara 28.6-94.7%, dan pada koefisien kemiripan 0.53 aksesi pamelo dibedakan atas kelompok berbiji dan tidak berbiji.  Dengan demikian isoenzim dapat digunakan sebagai penanda dalam membedakan aksesi pamelo berbiji dan tidak berbiji.Kata kunci: kemiripan genetik, elektroforesis, penanda, analisis komponen utama, polimorfism

Islamic Library: History, Classification, and Waqf Role

Islam provides a great impetus for humans to pursue knowledge. The first verse revealed from the Prophet Muhammad (PBUH) is Iqra, which means “to read”. The Qur’an uses repetition to instill certain concepts in the consciousness of its listeners. Allah (God) and Rab (Sustainer) are repeated 2,800 and 950 times, respectively, in the Alquran and Ilm (knowledge) 750 times. The need to preserve the Alqur’an aroused a passion for compiling writings in various forms, which paved the way for establishing the earliest libraries in the Muslim world. Libraries in Islamic history occupy an important position. Its existence is very difficult to separate from the development and progress of science and Islamic civilization, especially in the 8-10 century AD. This study aims to determine Islamic library research trends published by leading journals. The data analyzed consisted of 663 indexed research publications. The data is then processed and analyzed using the VoS viewer application to determine the bibliometric map of the development of Islamic research libraries. There were at least 7 types of Islamic libraries in the golden age of Islamic civilization: independent library, public library, mosque library, palace library, university library, ribat library, and bimartisan or hospital library. The seven types of Islamic libraries are almost entirely waqf-based

Implementasi Konsep Digital Marketing untuk Promosi Kolam Renang di BUMDes Ngudi Rahardjo Desa Girikulon

BUMDes Ngudi Rahardjo memiliki Divisi Pariwisata, salah satu usaha yang berada dibawah naungan Divisi Pariwisata dari BUMDes Ngudi Rahardjo adalah Kolam Renang Lembah Manah. Selama ini media pemasaran atau promosi yang dilakukan oleh BUMDes Ngudi Rahardjo untuk Kolam Renang Lembah Manah masih terbatas. Sejauh ini proses promosi yang dilakukan masih menggunakan pemasaran lokal yang hanya mencakup promosi di daerah sekitar saja, sehingga tamu atau wisatawan yang datang belum terlalu banyak dan tempatnya pun belum terlalu dikenal publik yang lebih luas. Bisa dikatakan cara yang dilakukan masih cukup konvensional, belum menerapkan konsep digital marketing. Untuk itu, kegiatan pengabdian masyarakat ini dilakukan guna mengimplementasikan konsep digital marketing dengan memberikan pelatihan mengenai penggunaan aplikasi editing video, untuk membantu para pengelola dan staff dari kolam renang girikulon untuk mengembangkan cara promosi melalui online

Perbanyakan Vegetatif Tanaman Jarak Pagar (Jatropha curcas L.) dengan Stek Batang: Pengaruh Panjang dan Diameter Stek

Since physic nut (Jatropha curcas L.) is heterozygous, sexual propagation results in great genotypic and phenotypic variability. Development of efficient techniques for asexual propagation would benefit the nursery industry as this would lead to selection and production of particular clones with desirable characteristics. Therefore, two following studies were conducted from September until December 2007.  The objective was develop a protocol for vegetative propagation of physic nut by stem cutting in different size of cutting. The first experiment was dealt with stem cutting length (20 cm, 25 cm, and 30 cm) at the same size of diameter (2.5-3.0 cm), and the second experiment was dealt with diameter of stem cutting (3 cm, 2.5-2.9 cm, 2.0-2.4 cm, and 1.5-1.9 cm) at the same size of length (30 cm). Each of experiment was designed in Completely Randomized Design with three replications. Each experimental unit consisted of 25 seedlings. The result showed that cutting growth varied depending on length and diameter of stem cutting. However, better seedling growth and better survival of young plant of physic nut can be obtained from stem cutting with 20-30 cm in length and stem cutting with 2.0-2.9 cm in diameter.   Key words: cutting diameter, cutting length, Jatropha, survival, transplantin

Potensi Hasil Jarak Pagar (Jatropha curcas L.) pada Satu Tahun Budidaya di Lahan Kering Lombok Barat, Nusa Tenggara Barat

Productivity of Physic Nut (Jatropha curcas L.) depends on environment and culture intensity. We evaluated yield potential of Jatropha curcas L. at dry land (sandy entisol soil type) of West Lombok, West Nusa Tenggara using three types of propagules, i.e., stem cutting, seed, and seed after pruning and were designed with Randomized Block Design in three replications during November 2006 until November 2007. Result showed that productivity of nut is 880.78 kg/ha (352.31 g/plant) from stem cutting, 749.81 kg/ha (299.92 g/plant) from seed, and 484.11 kg/ha (193.64 g/plant) from seed followed by pruning after 2 weeks planting