Pengaruh formulasi metil eugenol block plus terhadap tangkapan lalat buah Bactrocera spp. pada tanaman cabai

Fruit fly Bactrocera spp. is one of important pests in chili pepper. The use of methyl eugenol (ME) block plus as an attractant in traps is one method of controlling fruit flies populations. This study aims to find out the appropriate formulation of ME block plus formulation in increasing fruit fly catches on chili pepper. The experiment was carried out from January to April 2018 in Lembang Village, Lembang District, West Bandung Regency. The experiment used a randomized block design consists of eight treatments and three replications. The treatments tested were ME 2 ml was applied to all treatments using cotton; block; chili essence 4 ml block; 4 ml block of guava essence; orange essence 4 ml block; starfruit essence 4 ml block; mango essence 4 ml block; an attractant block product with the active ingredient ME. Although the results showed that all the treatments tested could not attract female fruit flies, the essence formulation was successful in attracting male fruit flies by 87%. The 4 ml chili essence in the 2 ml ME block formulation was the most effective treatment to increase male fruit fly catches by as much as 377 fruit flies/traps/week specifically the species Bactrocera dorsalis (Hendel), Bactrocera carambolae Drew & Hancock, Bactrocera umbrosa Fabricius, and hybrid fruit flies B. dorsalis x B. carambolae.

A Tree Computing Block Chain Protocol Crypto-Signature Model

This author has for the past decade developed a mathematical basis for product languages, at times with colleagues, applying agent crypto-signatures to authenticate business process models. This chapter is the newest application for what is at recent times called block chain. A new algebraic tree based public key cryptography techniques and algorithm for crypto-signatured block chain processing is presented. The techniques apply agent crypto-signatured algebras and block product language signatures for an agenda-based block chain protocol. An algorithm with a new public key computable trust model for signature tree block parties accomplishes the block chain goals.

Improvement Of Block Product Turbo Coding By Using A New Concept Of Soft Hamming Decoder

The block product turbo code (BPTC) is classified as one of block turbo code concatenation forms. The Hamming code can detect two-bit error and correct one-bit error. The BPTC uses two Hamming codes for "column" coding and "row" coding, it has improved the Hamming code correcting only one error. In addition, the BPTC carries out block interleaving coding for disorganizing the transmission sequence before transmission, so as to avoid burst errors when the signal meets multi-path channel in the channel. This paper will discuss the decoding mechanism of the BPTC and analyze the efficiency of using a soft decoding algorithm in the decoding process. The soft Hamming Decoder is based on error patterns which belong to the same syndrome. It is shown that it is sufficient to investigate error patterns with one and two errors to gain up to 1.2 dB compared to hard decision decoding. Here, we will consider also the error patterns with three errors which belong to the determined syndrome, which increases the gain and improves the quality of the soft-output due to the increased number of comparisons with valid code words, in despite that, it will increase the complexity of the decoding process. The system is based on two Hamming block channel code combinations, which can be similar or different, a block interleaving to construct a BPSK modulation and BPTC coding system in the concept of feedback encoding in turbo code over an AWGN channel. To observe its coding improvement, we present the simulation results for the soft decoding of the BPTC codes of a code word length from 49 bits (using two (7,4) codes) up to 1440 bits (using two (127,120) codes).

Development and Application of the Light Ceramsite Foam Concrete Insulation Block

This paper introduces the form of materials of the light ceramsite foam concrete insulation block, product specifications, production technology and product properties .Discusses the construction of self thermal insulation wall system construction.