ROLE OF SAWDUST IN THE REMOVAL OF IRON FROM AQUEOUS SOLUTION

Sawdust, inexpensive material has been utilized as an absorbent for the removal of iron from aqueous solution for their safe disposal. The adsorption experiments of untreated sawdust (SD)and treated sawdust (SDC) have been carried out at room temperature using the batch test. The Langmuir and Freundlich isotherms were used to observe sorption phenomena of sawdust in the removal of iron. The results indicate that the sawdust was capable in removing iron in aqueous solution. The results have shown that the Langmuir isotherm was found well fitted into the experimental data as compared to the Freundlich isotherm. It was found that, chemisorptions and physisorption were the prime mechanism for the process of adsorption to occur between the sawdust and iron. The results also proved that the acid sulphuric treated sawdust is much better than that of untreated sawdust as an adsorbent for iron

Studi Transpor Sedimen di Pantai Slamaran Pekalongan

Pantai akan memulihkan bentuknya sendiri ketika dihadapkan dengan gelombang normal, atau akan terjadi erosi di satu lokasi dan sedimentasi di sisi lainnya. Penelitian ini bertujuan untuk mengetahui transpor sedimen di Pantai Slamaran Pekalongan dan memprediksikan selama 10 tahun (2012-2022 dengan menggunakan model NEMOS. Penelitian ini dilaksanakan pada tanggal 27 Mei – 11 Juni 2012 di Pantai Slamaran Pekalongan. Data yang digunakan sebagai data primer adalah data gelombang, data pasang surut, data tracking garis pantai dan sampel sedimen dasar. Metode penelitian yang digunakan adalah metode pemodelan dan penentuan titik sampling menggunakan metode sampling purposif. Analisis data menggunakan metode matematis dengan pendekatan permodelan. Hasil penelitian menunjukan bahwa jenis sedimen dasar yang dominan di perairan Slamaran adalah pasir lanauan dan jenis sedimen yang dominan di sepanjang pantai Slamaran adalah pasir. Sepanjang tahun 2003-2012 Pantai Slamaran telah mengalami sedimentasi seluas 1121.39 m2 dan erosi seluas 102.4 m2. Tahun 2013-2022 diprediksikan akan terjadi sedimentasi seluas 1621,72 m2 dan erosi seluas 84,44 m2 di Pantai Slamaran Pekalongan. Dengan demikian Pantai Slamaran dalam 10 tahun kedepan diprediksikan akan mengalami sedimentasi

Nuclear insulin-like growth factor 1 receptor phosphorylates proliferating cell nuclear antigen and rescues stalled replication forks after DNA damage

We have previously shown that the insulin like growth factor 1 receptor (IGF1R) translocates to the cell nucleus, where it binds to enhancer like regions and increases gene transcription. Further studies have demonstrated that nuclear IGF1R (nIGF1R) physically and functionally interacts with some nuclear proteins, i.e. the lymphoid enhancer binding factor 1 (Lef1), histone H3, and Brahma related gene 1 proteins. In the present study, we identified the proliferating cell nuclear antigen (PCNA) as a nIGF1R binding partner. PCNA is a pivotal component of the replication fork machinery and a main regulator of the DNA damage tolerance (DDT) pathway. We found that IGF1R interacts with and phosphorylates PCNA in human embryonic stem cells and other cell lines. In vitro MS analysis of PCNA coincubated with the IGF1R kinase indicated tyrosine residues 60, 133, and 250 in PCNA as IGF1R targets, and PCNA phosphorylation was followed by mono and poly ubiquitination. Coimmunoprecipitation experiments suggested that these ubiquitination events may be mediated by DDT dependent E2/E3 ligases (e.g. RAD18 and SHPRH/HLTF). Absence of IGF1R or mutation of Tyr60, Tyr133, or Tyr250 in PCNA abrogated its ubiquitination. Unlike in cells expressing IGF1R, externally induced DNA damage in IGF1R negative cells caused G1 cell cycle arrest and S phase fork stalling. Taken together, our results suggest a role of IGF1R in DDT

Studi Perencanaan Stabilitas Dinding Penahan Tanah pada Tebing Sungai Butong, Kelurahan Melayu Kabupaten Barito Utara Provinsi Kalimantan Tengah

Sungai Butong merupakan sungai tadah hujan dengan luas DAS sebesar 2,95 km2 dan menjadi bagian dari Daerah Aliran Sungai (DAS) Barito. Sungai ini adalah salah satu sungai yang melintasi kota Muara Teweh tepatnya di kecamatan Teweh Tengah.Penurunan muka tanah tebing dapat terjadi kapan saja, terlebih lagi jika pada musim penghujan tiba, pergerakan tanah tersebut dapat mengakibatkan turunnya permukaan badan jalan yang berada diatas tebing.Berat volume tanah sangat dipengaruhi oleh kadar air dan kedudukan air tanah.Dinding Penahan Tanah tipe Kantiliver adalah dinding yang terdiri dari dinding dan beton bertulang yang berbentuk huruf T. ketebalan dari dua bagian ini relative tipis dan secara penuh diberi tulangan untuk menahan momen dan gaya lintang yang bekerja padanya. Perhitungan debit banjir yang terjadi pada sungai butong menggunakan metode rasional adalah Q = 0,788 m3/dt. Dalam perencanaan ini dimensi dinding penahan tanah hasil perhitungan, Lebar atas (Ta) = 0,45 m, Tinggi dinding (H) = 6,00 m, Lebar plat dasar (B) = 0,70 x 6,00 = 4,20 m, Tumit depan (Tb) = 4,20 / 3 = 1,40 m, Lebar flens bawah (D) = 6,00 / 10 = 0,60 m, Tumit belakang (Td) = 4,20 – (1,40 + 0,60) = 2,20 m.Pada baris I : = 31,85 ton < 32,689 ton ,Pada baris II = 12,28 ton < 32,689 ton (Memenuhi terhadapGuling dan Keruntuhan tanah),Gaya transversal : 17,068 ton <18,20 ton (stabilitas terhadap geser terpenuhi).Total Rencana anggaran biaya DPT Cantilever adalah “ Sembilan Milyard delapan puluh juta enam ratus empat puluh ribu rupiah

Characterization of an activating R1353H insulin-like growth factor 1 receptor variant in a male with extreme tall height

Genetics of disease, diagnosis and treatmen

Active Capacitive Sensing: Exploring a New Wearable Sensing Modality for Activity Recognition

Abstract. The paper describes the concept, implementation, and eval-uation of a new on-body capacitive sensing approach to derive activity related information. Using conductive textile based electrodes that are easy to integrate in garments, we measure changes in capacitance inside the human body. Such changes are related to motions and shape changes of muscle, skin, and other tissue, which can in turn be related to a broad range of activities and physiological parameters. We describe the physi-cal principle, the analog hardware needed to acquire and pre-process the signal, and example signals from different body locations and actions. We perform quantitative evaluations of the recognition accuracy, focused on the specific example of collar-integrated electrodes and actions, such as chewing, swallowing, speaking, sighing (taking a deep breath), as well as different head motions and positions.

Active capacitive sensing: exploring a new wearable sensing modality for activity recognition

The paper describes the concept, implementation, and evaluation of a new on-body capacitive sensing approach to derive activity related information. Using conductive textile based electrodes that are easy to integrate in garments, we measure changes in capacitance inside the human body. Such changes are related to motions and shape changes of muscle, skin, and other tissue, which can in turn be related to a broad range of activities and physiological parameters. We describe the physical principle, the analog hardware needed to acquire and pre-process the signal, and example signals from different body locations and actions. We perform quantitative evaluations of the recognition accuracy, focused on the specific example of collar-integrated electrodes and actions, such as chewing, swallowing, speaking, sighing (taking a deep breath), as well as different head motions and positions