Effect of Composition and Temperature on the Formation of Delta Ferrite in the Billet for P92 Steel

2011 ◽  
Vol 194-196 ◽  
pp. 1280-1286 ◽  
Author(s):  
He Min Jing ◽  
Bo Wang ◽  
Dang Sheng Xiong ◽  
Yin Geng Xu ◽  
Jun Jie Wang ◽  
...  

The use of P92 is becoming more and more widespread in high temperature steam pipe of super-ultracritical power station boilers, it’s key material for the manufacture of boiler’s four main pipes. The properties of P92 are closely related with its microstructure, and the microstructure of P92 has strong relationship with its’ composition and hot processing technology. Three types of P92 with different composition have been prepared. The relationship of delta ferrite between composition, smelting and heat forging process has been investigated for these three samples. The results show that the delta ferrite can be avoided by the adjustment of composition and making process, the delta ferrite will occurred in the matrix of P92 which without delta ferrite before heat treatment if the heat temperature exceed 1200°C , the delta ferrite existed in P92 ingot matrix resulted from the composition cannot be eliminated by hot working and heat treatment.

2021 ◽  
Vol 1 (1) ◽  
pp. 24-28
Author(s):  
Nadya Savira Chaerani ◽  
Dedeh Fardiah

Abstract. In February 2019 KPID West Java issued a circular containing restrictions on the hours of broadcast of some English-language songs that were vulgar in content, both in the form of songs or video clips. There are 17 English songs contained in circular attachments issued by KPID West of Java. Dozens of songs can only be aired starting at 22:00 WIB until 03.00 WIB. The broadcast limitation starts from public complaints and KPID supervision of the broadcast content. A number of online media rollicking to preach this event, one of which is online media Detik.com which is a news site that is widely accessed by various groups. This study uses a quantitative method with a correlational approach that aims to find out the relationship of truth, relevance, balance and neutrality between the coverage of 17 western songs by KPID West of Java towards the interests of listeners of western songs on Radio as aspects of cognitive, evaluative and the interests of listeners of western songs on the radio The students of Faculty of Communication Sciences Unisba as the dependent variable, this study uses the objectivity theory of Westerstahl. From this study using the stratified random sampling technique, it was concluded that there was a significant and very strong relationship between Factuality, Impartiality and Western Song Listeners' Interests on Radio at the Faculty of Communication Sciences Unisba. Abstrak. Pada bulan Februari 2019 KPID Jawa Barat mengeluarkan surat edaran yang berisi tentang pembatasan jam penyiaran beberapa lagu berbahasa Inggris yang berkonten vulgar, baik dalam bentuk lagu atau pun video klip. Terdapat 17 lagu berbahasa Inggris yang terdapat dalam lampiran surat edaran yang dikeluarkan KPID Jawa Barat. Belasan lagu itu hanya boleh tayang mulai pukul 22.00 WIB hingga 03.00 WIB. Pembatasan penyiaran berawal dari aduan masyarakat dan pengawasan KPID terhadap isi siaran. Sejumlah media online beramai-ramai memberitakan peristiwa ini salah satunya media online Detik.com yang merupakan situs berita yang banyak diakses oleh berbagai kalangan. Penelitian ini menggunakan metode kuantitatif dengan pendekatan korelasional yang bertujuan mengetahui adanya hubungan kebenaran, relevansi, keberimbangan dan netralitas antara pemberitaan pembatasan 17 lagu barat oleh KPID Jawa Barat terhadap minat pendengar lagu barat di Radio sebagai aspek dalam kognitif, evaluatif dengan minat pendengar lagu barat di radio pada Mahasiswa Fikom Unisba sebagai variabel terikat, penelitian ini menggunakan teori Objektivitas dari Westerstahl. Dari penelitian ini yang menggunakan teknik penarikan sampel stratified random sampling ini ditemukan kesimpulan, bahwa terdapat hubungan yang signifikan dan sangat kuat antara Faktualitas, Imparsialitas dengan Minat Pendengar Lagu Barat di Radio pada Mahasiswa Fikom Unisba.


Author(s):  
Gilang Primanagita Rachman ◽  
Indah Riyantini ◽  
Zahidah Hasan ◽  
Herman Hamdani

Seagrass beds in Ujung Genteng waters are one of the shallow marine ecosystems that have relatively high biodiversity. Seagrass ecosystem as one of the coastal ecosystems in these waters has a diversity of marine life that is associated with it. The purpose of this study was to establish the association pattern and the correlation of mega zoobenthos to seagrass ecosystem conditions. The method used was a survey method by conducting a survey direct observation of the stations that have been determined.  Three seagrass species were identified, namely: Thallasia hemprichii, Cymodoceae rotundata and Enhalus acoroides. The highest density of seagrass was found in station 2 with the type of seagrass Thallasia hemprichii as much as 207 ind/m2. Fifteen mega zoobenthos species were identified representing 3 phyla. Species Mega zoobenthos which is most commonly found in Ujung Genteng waters is Ophiothrix fragilis, Ophiocoma erinaceus, and Diadema setosum. The mega zoobenthos Diversity Index at the observation station is included in the medium category that is 2.33-2.66 and the evenness index is 0.63-0.84. Correlation of seagrass density with mega zoobenthos obtained by 0.92 shows that there is a very strong relationship between seagrass density with mega zoobenthos. The result shows that there are 4 patterns of close association and 2 patterns of very close association. Ophiocoma erinaceus of the ophiuroidea class has a pattern of very close positive associations with seagrass Cymodoceae rotundata and Dendrodoris sp of the order nudibranchia has a pattern of very close negative associations with seagrass Cymodoceae rotundata.


2015 ◽  
Vol 8 (4) ◽  
pp. 134-144
Author(s):  
I.A. Basyul

Hypotheses about the relationship of the processes of visual perception and variations of the task in an identical stimulus environment was tested. The following tasks were tested: 1) a simple observation of the illuminations of the character in the matrix; 2) counting the number of highlights; 3) monitoring of the target symbol highlights and typing text with the P300 BCI. In a group of 14 people showed that the highest average length of visual fixation and the lowest dispersion of fixation observed for the second type of task. Statistically significant differences in the level of dispersion of visual fixations found between 1-2 and 1-3 modes; differences between the modes for the duration of fixations are at trends. Significant differences in the number of visual fixations on the target symbols wasn’t detected. The overall conclusion is the high perspective of pairing methodology brain-computer interface on the P300 wave with eye tracking to optimize the characteristics of the stimulus in the BCI environment. The differences in the parameters of oculomotor activity between the tasks reflect the level of attention concentration in the target symbols of the P300 BCI


A set of matrices can be found which is isomorphic with any linear associative algebra. For the case of quaternions this was first shown by Cayley (1858), but the first formal representation was made by Peirce (1875, 1881). These were two-matrices, and the introduction of the four-row matrices of Dirac and Eddington necessitated the treatment of a wave function as a matrix of one row (as columns). Quaternions have been used by Lanczos (1929) to discuss a different form of wave equation, but here the Dirac form is discussed, the wave function being taken as a quaternion and the four-row matrices being linear functions of a quaternion. Certain advantages are claimed for quaternion methods. The absence of the distinction between outer and scalar products in the matrix notation necessitates special expedients (Eddington 1936). Every matrix is a very simple function of the fundamental Hamiltonian vectors α, β, γ , so that the result of combination is at once evident and depends only on the rules of combination of these vectors. At all stages the relationship of the different quantities to four-space is at once visible. The Dirac-Eddington matrices, the wave equation and its exact solution by Darwin, angular momentum operators, the general and Lorentz transformation, spinors and six-vectors, the current-density four-vector are treated in order to exhibit the working of this method. S and V for scalar and vector products are used. Quaternions are denoted by Clarendon type, and all vectors are in Greek letters.


Author(s):  
Irfan Fadhlurrahman ◽  
Saharuddin Saharuddin

ABSTRACTCooperatives as one of the sectors of economic power that is considered the most suitable developed in Indonesia, because formed by members and aims for the welfare of its members. Pesantren as a grassroots Islamic educational institution also develops Koperasi Pondok Pesantren (Kopontren) by fostering farmer groups. The purpose of this study is to analyze the relationship of individual characteristics (age, education level, length of work, and income level), social capital, and participation of farmer group members in Kopontren Alif agribusiness activities. The result of the research shows that there is no significant correlation between individual characteristic with social capital and participation, except the age relation with participation, but the relation is negative. While social capital with participation has a significant and strong relationship. This is due to the high social capital with the participation of farmer group members in the activities of Kopontren Alif agribusiness.Keywords: farmer groups, individual characteristic, kopontren, social capital, participation. ABSTRAKKoperasi sebagai salah satu sektor kekuatan ekonomi yang dianggap paling cocok dikembangkan di Indonesia, karena dibentuk oleh anggota dan bertujuan untuk kesejahteraan anggotanya. Pesantren sebagai lembaga pendidikan Islam yang bersifat akar rumput turut mengembangkan koperasi pondok pesantren (Kopontren) dengan membina kelompok tani. Tujuan penelitian ini adalah menganalisis hubungan karakteristik individu (usia, tingkat pendidikan, lama bekerja, dan tingkat pendapatan), modal sosial, dan partisipasi anggota kelompok tani binaan dalam kegiatan agribisnis Kopontren Alif. Hasil penelitian yang diperoleh menunjukkan bahwa tidak terdapat hubungan signifikan antara karakteristik individu dengan modal sosial dan partisipasi, kecuali hubungan usia dengan partisipasi, namun hubungannya negatif. Sedangkan modal sosial dengan partisipasi memiliki hubungan yang signifikan dan kuat. Hal ini dikarenakan tingginya modal sosial dengan partisipasi anggota kelompok tani dalam kegiatan agribisnis Kopontren Alif.Kata kunci: karakteristik individu, kelompok tani, kopontren, modal sosial, partisipasi.


2015 ◽  
Vol 2 (3) ◽  
pp. 110 ◽  
Author(s):  
Alfrina Rumbiak ◽  
Jan F.W.S. Tamanampo ◽  
Gaspar D. Manu

Clam, Polymesoda erosa is species that live in sandy and muddy substrata of mangrove ecosystem. The aims of this study are to look at the relationship of the shell length and width,body thiekness, body weight and organ weight based on class size to determine the growth. The study also was designed to reveal the conditional factor based on the clam class size. The samples were collected during the day at lowest tide in January 2014. The total is 153 individuals of Polymesoda erosa clam were collected during the study. The result shows thare is a strong positive relationship between body lenght and body weight as shown within  the regression analysis with intercept (a) = 0,470779,  regression coefficient (b) = 0,69095 and correlation coefficient (r) = 0,406357. Based on the r value, it can be concluded that there is strong relationship regarding the length and weight increment as much as 40,63 %.   Keywords : Characteristics Morphometrics and Shellfish totok condition factor Nort Maluku ABSTRAK .         Kerang  totok (Polymesoda erosa) adalah salah satu jenis moluska dalam kelas bivalvia yang hidup di ekosistem mangrove pada daerah yang bersubstrat pasir dan berlumpur. Penelitian ini bertujuan. mengetahui kisaran ukuran panjang cangkang,,lebar cangakang, tubuh, berat tubuh, dan berat organ lunak, selanjutnya mengetahui pertambahan panjang, lebar cangkang, tebal tubuh, berat tubuh, dan berat organ lunak berdasarkan kelas ukuran, dan juga  mengetahui hubungan pertumbuhan panjang cangkang, dan berat cangkang, dan  mengetahui faktor kondisi kerang di setiap kelas ukuran.  Pengambilan sampel di lakukan pada siang hari saat surut terendah pada bulan januari 2014. Berdasarkan kegiatan penelitian di wilayah pesisir Desa Nusajaya Kecamatan Waslei Selatan Kabupaten Halmahera Timur Maluku Utara, dikumpulkani  153 individu kerang totok (Polymesoda erosa). Hasil analisis regresi menunjukkan bahwa setiap pertambahan panjang cangkang akan diikuti dengan pertambahan berat secara proporsional mengikuti nilai Intercept (a) = 0.470779, dan koefisien regresi (b) = 0,690957. Niilai koefisien korelasi (r) = 0. 406357 menyatakan  adanya korelasi positif yang menerangkan terdapat keeratan hubungan  antara pertambahan panjang cangkang dengan pertambahan berat berat tubuh sebesar 40.63 %   Kata kunci :Karakteristik Morfometrik dan Faktor kondisi KerangTotok Maluku utara   1Bagian dari skripsi 2Mahasiswa Program Studi Manajemen Sumberdaya Perairan FPIK-UNSRAT 3Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi  


2018 ◽  
Vol 4 (2) ◽  
pp. 89
Author(s):  
Peshraw A. Mohammed Ameen

Power is the legitimate use of force in a socially acceptable manner, the legitimate force exercised by a person or group over others. The element of legitimacy is an important element of the idea of ​​power, which is the primary means by which power distinguishes itself from other, more general concepts of force. Force can be imposed forcibly or violently. On the other hand, the Authority relies on the acceptance of the subordinates, granting the right to those above them to issue orders or directives. the relationship of psychology and political power is a strong relationship, and through the study of the psychology of the masses and rulers in any state or region can be interpreted and predict the behavior of power and the masses in this country, and the subject of authority in the Kurdistan region as a subject directly related to the subject of psychology of power and the quality of this authority in this region is a place Controversy for everyone who monitors and deals with this power, so determine the quality of power and how to conduct it through the study of the psychology of power, according to current reality and one of the most important jobs for researchers in the Kurdistan Region so we know the quality of political authority in this region, so we try in this modest research to determine the quality and type of power in the Kurdistan Region through the analysis of the psychology of power in Kurdistan region.


Author(s):  
Larisa Ivanovna Putyatina ◽  
Larisa Andreevna Timofeeva

The results of analysis of the relationship of structure and mechanical properties of ductile cast ironpots with globular graphite form, experience and perspectives of their industrial application. It is shown thatthe growth in the production of castings of ductile iron is caused exclusively by a favorable combination ofphysical, mechanical, operational and technological properties of this material, as well as economicconsiderations.The main factors regulating the cast structure and level of physical, mechanical and operationalcharacteristics of ductile iron are: the quality of the initial melt modification modes (including composition,quantity, method and sequence of input and additives), chemical composition and rate of solidification of themetal.Heat treatment of ductile iron is more effective than iron with lamellar graphite , since graphitespherical than weakens the metal substrate than the plate . Castings from nodular iron are exposed tovarious types of heat treatment. The purpose of heat treatment - structurally free cementite decomposition inrelatively thin sections of the casting ( graphitizing joke ) or hardening of pearlite matrix ( normalization).Can be used combined heat treatment, the purpose of pursuing the expansion of structurally free cementitewith subsequent normalization.


JURISDICTIE ◽  
2012 ◽  
Author(s):  
Alamul Huda

<p>The existence of Islam as a religion of da’wah dan humanity, which means, that the basic concept of Islamic theories are covers about all the conditions of human life, which in a sense-not only discuss the purely worship (ibadah mahdloh), but also talk about aspects of improvements in social  community and society. In the present context, Manaqib Sheikh Abdul Qadir al-Jilani has been designed to be a remembrance and famous and known as a unique religious movement and became a “breath and reason” the spirituality of marginalized communities (edges), according to the facts and truth, the reality of religious movements can affect, keep and maintain the norms and morality (moral) social. Where there, in the presence of this movement and behavior concepts silaturrahim (among jama’a manaqiban), awakening the main attitude in life, personality, nice and good character. And also in fact, the relationship of reason and the reconstruction of the socio-spirituality of the theological community has a strong relationship from the perspective and view point of “riayatul maslahat”.</p> <p>Keberadaan Islam sebagai agama dakwah dan kemanusiaan, yang berarti, bahwa konsep dalam teori- teori keislaman bahasannya mencakup tentang seluruh kondisi kehidupan manusia, yang dalam artian- bukan hanya membahas ibadah mahdloh (murni bersifat ilahiah)  saja tetapi juga berbicara tentang aspek-aspek perbaikan (moral dan sosial) di dalam masyarakat. Dalam konteks kekinian, Manaqib Syaikh Abd al-Qadir al-Jailani yang telah di desain menjadi sebuah dzikir  dan kemudian masyhur dan di kenal sebagai sebuah gerakan keagamaan yang unik dan menjadi sebuah “nalar dan nafas” spiritualitas masyarakat marjinal (pinggiran); menurut fakta, pada kenyataannya –gerakan keagamaan tersebut- dapat mempengaruhi dan menjaga norma dan   moralitas (akhlak) sosial. Dimana, dalam gerakan ini terdapatnya konsep dan perilaku silaturrahim (diantara jama’ah manaqiban), terbangunnya sikap utama dalam menjalani hidup, kepribadian dan karakter yang baik. Dan pada kenyataannya, hubungan nalar spiritualitas dan rekonstruksi sosio-teologis masyarakat memiliki hubungan yang kuat dari sisi titik pandang dan perspektif ri’ayatul maslahat( public interest)</p> <p><strong></strong></p>


2020 ◽  
Vol 8 (1) ◽  
pp. 42
Author(s):  
Ilham Dwi Prakoso

Background: Diarrhea is still a major health problem in Indonesia. The Province of East Java ranks the second-highest number of diarrhea incidence after West Java, which reached 1,048,885 patients. The most dominant factors contributing to diarrheal diseases are water and family latrines. Purpose: This study aims to analyze the relationship between access to drinking water and proper sanitation with the incidence of diarrhea in East Java. Methods: This study was an observational study with a correlation study design. The population used was all people suffering from diarrheal diseases handled by each district in East Java Province in 2017. The method of sampling used aggregate data on the number of cases of diarrhea handled and the number of people with access to drinking water and proper sanitation per district/city in East Java province based on the East Java Health Profile 2017. The variables studied were the number of people who had access to drinking water (feasible), the number of people who had access to proper sanitation facilities (healthy latrines), and the number of diarrhea cases handled in East Java Province, with analysis techniques in the form of Pearson correlation. Results: This study showed that there was a relationship between residents who had access to inadequate drinking water (p = 0.00) which had a strong relationship of 0.48 (strong enough) and there was also a relationship between residents with inadequate access to sanitation facilities (not have healthy latrines) (p = 0.00) which had a strong relationship of 0.53 (strong enough). Conclusion: There is a relationship between access to drinking water and sanitation that is not feasible with the incidence of diarrhea found in East Java. 


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