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"One main problem that must be coped with by atelecommunication company (Telco) is the connection interference experienced bycustomers. When a cell phone number Pn in a region R suffers froma connection problem, the first step commonly taken by that Telco?s technicianis to find the base transceiver station (BTS) among existing BTSs in Rthat is currently covering Pn. However, the proprietary tools used tolocate the covering BTS can usually be accessed only from the regional office?sintranet with a specific IP address. Alternatively, a technician can use telnetto log in to a mobile switching center (MSC) server and search to determinewhether Pn is being attached in a BTS that is registered in the relatedMSC server. However, this method is exhausting and inefficient because an MSCserver usually registers hundreds to thousands of BTSs. This article proposesimproving the efficiency, mobility, and interoperability of BTSlocation-finding by making use Telegram?s bot and command-line interfaces.Mobility and interoperability are improved because the proposed method can runboth on PCs and smartphones. The proposed method is investigated experimentallyat Telkomsel Ltd., a known Telco in Indonesia. This method requires only 30seconds to locate the covering BTS, which is 20 times and four to seven timesfaster than manual telnet and the proprietary tool, respectively."

"One main problem that must be coped with by a telecommunication company (Telco) is the connection interference experienced by customers. When a cell phone number Pn in a region R suffers from a connection problem, the first step commonly taken by that Telco’s technician is to find the base transceiver station (BTS) among existing BTSs in R that is currently covering Pn. However, the proprietary tools used to locate the covering BTS can usually be accessed only from the regional office’s intranet with a specific IP address. Alternatively, a technician can use telnet to log in to a mobile switching center (MSC) server and search to determine whether Pn is being attached in a BTS that is registered in the related MSC server. However, this method is exhausting and inefficient because an MSC server usually registers hundreds to thousands of BTSs. This article proposes improving the efficiency, mobility, and interoperability of BTS location-finding by making use Telegram’s bot and command-line interfaces. Mobility and interoperability are improved because the proposed method can run both on PCs and smartphones. The proposed method is investigated experimentally at Telkomsel Ltd., a known Telco in Indonesia. This method requires only 30 seconds to locate the covering BTS, which is 20 times and four to seven times faster than manual telnet and the proprietary tool, respectively."

"The antimicrobial properties of bagasse paper sheets coated withnatural polymers (chitosan, different ratios of (gelatin/glycerol) + chitosan,hemicellulose, hemicellulose + glycerol, hemicellulose+chitosan) orsynthetic organophosphorus dimer compounds were evaluated in this work.Hemicelluloses showed moderate activity against Bacillus subtilis and Candida albicans, while chitosan showed weakactivity against B. subtilis. The condition that offered the highest inhibitoryactivity of bagasse paper was the onecoated with 1,3-diaryl-2,2,2,4,4,4-hexachlorocyclodiphosph(V)azane(where aryl is p-chloroaniline or p-anisidine). The developed bagasse paperswere evaluated against Gram-positive bacteria, Gram-negative bacteria, yeasts, and fungi. The highest inhibitory activity was obtained at a concentration of 200mg/mL for p-chloroaniline with an inhibition zone that varied for differentmicrobes from 6.9 mm to 26 mm. The highest inhibitory activity was obtained at300?250 mg/mL for p-anisidine against most of the pathogenic microorganismswith an inhibition zone that varied for different microbes from 8 mm to 14.75mm. The observed antimicrobial and antifungal activity properties for bagasse paper coated with 1,3-diaryl2,2,2,4,4,4-hexachlorocyclodiphosph(V)azane could be attributed to the presence of Cl, P atoms, and the lone pair ofelectrons on N atoms in the structure of the dimers."

"The purpose of this paper was to investigate the performance of ceramic filters made from a mixture of natural clay, rice bran, and iron powder in removing cadmium from pulp industry effluent. Some parameters were examined such as acidity, total dissolved solid (TDS), total suspended solid (TSS), electrical conductivity (EC), and cadmium concentration. Results showed that the composition percentage of the ceramic filter, which in this case amounted to 87.5% natural clay, 10% rice bran, and 2.5% iron powder, may decrease cadmium concentration in pulp industry effluent by up to 99.0%. Furthermore, the permeate flux decreased after 30 minutes of filtration time, and subsequently became constant at one hour of contact time. In addition, Scanning Electron Microscope (SEM) micrographs of the ceramic filter surfaces indicate that ceramic filters have a random pore structure and can be categorized as microfiltration filters."

"in this paper, a 4.2GHz collinear antena is designed to be used for computer management of vehicles/communication utility that can be integrated into combat systems, that is air defense systems (ADS) and combat field management systems (CMS)."

"The choice among modes of intercity transport depends on conditions of not only intercity transport modes but also intracity transport in both the departure city and the arrival city. Intracity transport conditions might be advantageous for one intercity mode and disadvantageous for others. Intercity and intracity transport conditions are complex and need to be approached systemically. This study proposes an approach based on the passengers? preferences. The logit model was adapted to evaluate the transport modes? choices in competition. This model is called the ?Adapted Mixed Multinomial Logit Model? (AMML). It was applied on the Jakarta-Bandung corridor in both directions. It contributes to a complete approach for intercity transport mode choice by considering the influence of the intracity transport conditions in both the departure and arrival cities. The results proved that the choice of intercity transport mode depends not only on its own quality of service but also, importantly, on that of the intracity transport systems."

"The research aims to scale up a small-scale stirred batch reactor to a large-scale stirred batch reactor in order to degum crude palm oil for use as a raw material in biodiesel production. The scale-up is based on the similarity of fluid Reynolds numbers in the two differently sized reactors. To achieve this aim, computational fluid dynamic modeling and simulations of the two reactors were performed. A small-scale palm oil degumming process was carried out in a 250 cc autoclave reactor using a magnetic stirrer at 500 rpm. The simulation results of this small reactor yielded a fluid Reynolds number in the range of 5 to 3,482. The large-scale reactor proposed in this research is 1.25 m3 in volume and is equipped with two impellers: a pitched blade impeller and a Rushton turbine impeller. The pitched blade impeller is placed over the Rushton turbine impeller. They are rotated at 100 rpm. Under this setting and operation, the resulting fluid Reynolds number was in the range of 486 to 202,000. This result indicates that the large-scale reactor was able to reproduce the reaction performance obtained in the small-scale reactor."