Judul: Estimasi Kapasitas Tanaman Kelapa Sawit dalam Menyerap  Polutan (Studi Kasus: PTPN VI Batang Hari, Provinsi Jambi)
Abstrak: Vegetasi berkontribusi terhadap pengendapan polutan. Ketinggian dan karakteristik kanopi vegetasi memberikan pengaruh langsung terhadap besarnya turbulensi. Turbulensi mengontrol transfer momentum menuju kanopi tanaman yang membawa massa udara dan disertai sifat atmosfer. Penelitian ini bertujuan menduga kapasitas kanopi tanaman kelapa sawit pada PTPN VI Batang Hari, Provinsi Jambi dalam menyerap polutan berdasarkan analisis transfer momentum dan menganalisis pengaruh dinamika stabilitas atmosfer serta pengaruh periode hujan dan periode kemarau terhadap kemampuan tanaman kelapa sawit dalam menyerap polutan. Transfer momentum ditentukan menggunakan metode aerodinamik. Hasil penelitian menunjukkan nilai kapasitas deposisi kering pada kondisi atmosfer stabil 2,06 x 10-3 kg/m2 , netral 3,50 x 10-3 kg/m2 , dan tidak stabil 4,35 x 10-3 kg/m2 . Nilai kapasitas deposisi kering selama periode kemarau dan hujan masing-masing sebesar 4,5 10-3 kg/m2 dan 2,9 10-3 kg/m2 . Kondisi atmosfer cenderung tidak stabil selama periode kemarau, sedangkan selama periode hujan cenderung stabil. Pada kondisi atmosfer stabil turbulensi melemah sehingga transfer momentum menurun begitupun sebaliknya. Atmosfer mengalami pendinginan pada kondisi stabil sehingga turbulensi cenderung tertahan akibatnya perpindahan momentum secara vertikal ke bawah sangat rendah. Penelitian ini menunjukkan bahwa metode transfer momentum dapat digunakan untuk mengestimasi kapasitas penyerapan polutan tipe gas oleh vegetasi., Vegetation contributes to pollutant deposition. The heights and canopy characteristics of a vegetation directly influence the turbulence magnitude surrounding it. Turbulence controls the transfer of momentum toward the plant canopies carrying mass and accompanied nature of the atmosphere. The aim of this study is to estimate the canopy capacity of oil palms at PTPN VI Batang Hari, Jambi Province to absorb pollutants based on its momentum transfer and the influence of atmospheric stability dynamics and also rainy and dry periods upon absorbed pollutants. Momentum transfer is determined using aerodynamic methods. The results showed that the dry deposition capacity value at stable, neutral, and unstable atmospheric conditions are 2.06 x 10-3 kg/m2 , netral 3.50 x 10-3 kg/m2 , and 4.35 x 10-3 kg/m2 , respectively. Dry deposition capacity value during the dry and rainy periods is 4.5 10-3 kg/m2 and 2.9 10-3 kg/m2 , respectively. Further, atmospheric conditions tend to be unstable during the dry period, while the rainy period tends to be stable. The stable conditions affect the momentum transfer decreases along the turbulence weaken and the opposite. The cooling of the atmosphere, in stable conditions, impacts the turbulence to be restrained, resulting in considerably low vertical downward momentum transfer. This research shows that the momentum transfer method can be used to estimate gas-type pollutant by vegetation.
Keyword: Atmospheric stability, dry deposition capacity, momentum transfer, turbulence

Judul: Estimasi Kapasitas Tanaman Kelapa Sawit dalam Menyerap  Polutan (Studi Kasus: PTPN VI Batang Hari, Provinsi Jambi)
Abstrak: Vegetasi berkontribusi terhadap pengendapan polutan. Ketinggian dan karakteristik kanopi vegetasi memberikan pengaruh langsung terhadap besarnya turbulensi. Turbulensi mengontrol transfer momentum menuju kanopi tanaman yang membawa massa udara dan disertai sifat atmosfer. Penelitian ini bertujuan menduga kapasitas kanopi tanaman kelapa sawit pada PTPN VI Batang Hari, Provinsi Jambi dalam menyerap polutan berdasarkan analisis transfer momentum dan menganalisis pengaruh dinamika stabilitas atmosfer serta pengaruh periode hujan dan periode kemarau terhadap kemampuan tanaman kelapa sawit dalam menyerap polutan. Transfer momentum ditentukan menggunakan metode aerodinamik. Hasil penelitian menunjukkan nilai kapasitas deposisi kering pada kondisi atmosfer stabil 2,06 x 10-3 kg/m2 , netral 3,50 x 10-3 kg/m2 , dan tidak stabil 4,35 x 10-3 kg/m2 . Nilai kapasitas deposisi kering selama periode kemarau dan hujan masing-masing sebesar 4,5 10-3 kg/m2 dan 2,9 10-3 kg/m2 . Kondisi atmosfer cenderung tidak stabil selama periode kemarau, sedangkan selama periode hujan cenderung stabil. Pada kondisi atmosfer stabil turbulensi melemah sehingga transfer momentum menurun begitupun sebaliknya. Atmosfer mengalami pendinginan pada kondisi stabil sehingga turbulensi cenderung tertahan akibatnya perpindahan momentum secara vertikal ke bawah sangat rendah. Penelitian ini menunjukkan bahwa metode transfer momentum dapat digunakan untuk mengestimasi kapasitas penyerapan polutan tipe gas oleh vegetasi., Vegetation contributes to pollutant deposition. The heights and canopy characteristics of a vegetation directly influence the turbulence magnitude surrounding it. Turbulence controls the transfer of momentum toward the plant canopies carrying mass and accompanied nature of the atmosphere. The aim of this study is to estimate the canopy capacity of oil palms at PTPN VI Batang Hari, Jambi Province to absorb pollutants based on its momentum transfer and the influence of atmospheric stability dynamics and also rainy and dry periods upon absorbed pollutants. Momentum transfer is determined using aerodynamic methods. The results showed that the dry deposition capacity value at stable, neutral, and unstable atmospheric conditions are 2.06 x 10-3 kg/m2 , netral 3.50 x 10-3 kg/m2 , and 4.35 x 10-3 kg/m2 , respectively. Dry deposition capacity value during the dry and rainy periods is 4.5 10-3 kg/m2 and 2.9 10-3 kg/m2 , respectively. Further, atmospheric conditions tend to be unstable during the dry period, while the rainy period tends to be stable. The stable conditions affect the momentum transfer decreases along the turbulence weaken and the opposite. The cooling of the atmosphere, in stable conditions, impacts the turbulence to be restrained, resulting in considerably low vertical downward momentum transfer. This research shows that the momentum transfer method can be used to estimate gas-type pollutant by vegetation.
Keyword: Atmospheric stability, dry deposition capacity, momentum transfer, turbulence

Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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