Judul: Hubungan Retensio Sekundinae Dan Endometritis Pada Sapi Perah: Studi Kasus Di Koperasi Peternakan Bandung Selatan (Kpbs) Pangalengan, Jawa Barat
Abstrak: Retensio sekundinae dan endometritis merupakan gangguan reproduksi yang dapat menyebabkan kerugian ekonomi bagi peternak. Tujuan penelitian ini adalah untuk membuktikan adanya hubungan kejadian retensio sekundinae dan endometritis serta mengetahui pengaruhnya pada sapi perah. Penelitian dilaksanakan di Koperasi Peternakan Bandung Selatan (KPBS) Pangalengan, Jawa Barat. Data kejadian retensio sekundinae dan endometritis selama tahun 2011 sampai 2013 dianalisis secara deskriptif dan korelasi menggunakan aplikasi SPSS 22.0 untuk menyatakan ada atau tidaknya hubungan antara dua kejadian tersebut. Hasil menunjukan bahwa korelasi signifikannya yaitu 0.036 < 0.05. Hasil tersebut dapat dikatakan retensio sekundinae memiliki korelasi yang signifikan dengan endometritis. Nilai koefisien korelasinya positif yaitu 0.351 yang menunjukan bahwa jika jumlah kasus retensio sekundinae naik maka endometritis juga akan naik dan sebaliknya. Pengaruh kejadian tersebut yaitu dapat menurunkan tingkat kesuburan dan produksi pada sapi perah.
Keyword: endometritis, retensio sekundinae, sapi perah

Judul: Hubungan Retensio Sekundinae Danendometritisdenganefisiensi Reproduksi Pada Sapi Perah: Studi Kasus diKoperasi Peternak Sapi Bandung Utara (KPSBU) Lembang, Jawa Barat
Abstrak: This study aims to explore the relationship between retained placenta and endometritis with reproduction efficiency i.e. conception rate (CR) and service per conception (S/C) in dairy cows. The study was conducted at Koperasi Peternak Sapi Bandung Utara (KPSBU) Lembang, and Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) Dramaga Bogor Station, West Java. Data of retained placenta, endometritis cases, and reproduction efficiency during 2007-2009 were collected from KPSBU Lembang, and data of rainfall during 2007-2009 were compiled from BMKG Dramaga Bogor Station, West Java. Descriptive and correlation analysis were applied in data processing. Correlation coefficient (r) and determination coefficient (r2%) were tested using Minitab version 14 to respectively show degree of relationship and influence between variables. The result shows that retained placenta has correlation with endometritis (r=0.013), CR (r = 0.279), S/C (r=-0.119), and rainfall (r=0.235). Endometritis is correlated with CR (r=0.264), S/C (r=-0.159), and rainfall (r=-0.198). The rainfall has correlation with reproduction efficiency (CR) (r=0.103) and (S/C) (r=-0.222). Retained placenta explains 0.017% of endometritis, 7.78% of CR, 1.42% of S/C, and 5.52% of rainfall. Endometritis illustrates 6.97% of CR, 2.53% of S/C, and 3.92 of rainfall. Rainfall clarifies reproduction efficiency 1.06% of CR and 4.93% of S/C. Thus, retained placenta, endometritis, and rainfall are factors influencing CR and S/C.
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Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell