bluuebunny/crossref_metadata_2025_split huggingface dataset:
Changing Soil Characteristics during Succession in the Alaskan Boreal Forest
Authors: Yarie John , Valentine David , Van Cleve Keith 
Published: June 2019

Core IdeasRepeated sampling compared to a chronosequence can display changes due to climate change.Carbon quantities increased across the floodplain chronosequence, upland sites displayed no change.Nitrogen displayed a chronosequence increase in both concentration and quantity on the floodplain sites.Repeated sampling and chronosequence approaches can be used to develop an understanding of successional dynamics in forest ecosystems. The chronosequence approach enables a relatively rapid and consistent assessment of key variables, but relies on an assumption that spatial variability is a good substitute for temporal dynamics. Repeated sampling gives a more direct measure of temporal dynamics, but by definition requires much more time and is vulnerable to changes in investigators and methodologies. In this study, we compared these techniques in two well‐studied Alaska boreal forest landscape positions—upland (UP) and floodplain (FP)–and found a number of contrasting trends. In UP stands, soil C concentration increased with stand age across the chronosequence, but declined in individual stands over time. Conversely, soil P concentration declined across the UP chronosequence, but increased in individual stands. Both approaches yielded consistent trends for several variables, including N, pH, CEC (UP and FP), and K (UP). No changes were observed for 5 factors (upland C quantity, floodplain C concentration and quantity, and total P and Ca quantity on the floodplain) between sampling years that displayed either a positive or negative chronosequence trend. Changes in the one meter depth profile chemistry between sample time periods were investigated and showed the same differences that were found for the total profile average values of the soil property. Differences observed between these two values were tied to the depth structure of the observed soil characteristic.
Health Assessment of Nickel‐Contaminated Soils Linked to Chemical and Biological Characteristics
Authors: Tang Xiaoyan , Li Rui , Zheng Y. , McBride Murray B. 
Published: June 2019

Core Ideas
Ni‐contaminated soils were evaluated for microbial function and genetic diversity.
Soils with >500 mg kg‐1 total Ni had reduced microbial biomass and respiration.
Lower microbial diversity in Ni‐contaminated soils was revealed by genetic sequencing.
Soil health indicators were influenced by factors in addition to bioavailable Ni.
Soils contaminated historically by refinery nickel (Ni) emissions were subjected to laboratory assays evaluating soil health, including microbial function, biomass, and community diversity, based on high‐throughput DNA sequencing. The assays showed that soils with >500 mg kg−1 total Ni had lower microbial biomass and respiration rates as well as reduced microbial diversity and shifts in prevalent phyla compared with most soils with lower Ni. Soil testing for nutrient status suggested additional limitations due to factors other than Ni contamination, including deficiencies of Mn and other essential elements that could possibly explain reduced microbial function even in relatively uncontaminated soils. A greenhouse soybean assay showed greater Ni uptake from soils with the highest total and 0.01 M CaCl2–extractable Ni, with one of the high‐Ni soils (1900 mg kg−1 total Ni) having a level of CaCl2–extractable Ni predicted to reduce soybean growth by >25%. The study revealed that conventional macroscopic measures of soil health were reflected at the microscopic scale by differences in microbial community composition and diversity as evidenced by DNA analysis. Although soil health indicators were affected by high Ni bioavailability, other factors attributable to local differences in fertility status and organic matter content appeared to have strong influences on these indicators.
Novel nanostructured Fe–Cu–Al trimetal oxide for enhanced antimony(V) removal: synthesis, characterization and performance
Authors: Wang Jianyan , Chen Jing , Li Qiumei , Zhang Gaosheng 
Published: June 2019

Abstract
Given the adverse health effects of antimony (Sb), there is an increased focus on developing methods to remove this toxic metal from contaminated water bodies. To effectively remove Sb(V), a new nanostructured Fe–Cu–Al trimetal oxide was fabricated using co-precipitation method at ambient temperature. The Fe–Cu–Al trimetal oxide was very effective at removing Sb(V) from water; it had a maximal adsorption capacity of 169.1 mg/g at pH 7.0, a capacity that was competitive with most other reported adsorbents. The obtained amorphous oxide had a high pH point of zero charge (pHpzc = 8.8) and good adsorption Sb(V) efficiency over a wide pH range (4.0–8.0). Sb(V) uptake was achieved mainly through an ion-exchange reaction between Sb(V) ions and hydroxyl groups on the surface of the oxide. Given its good removal performance, high selectivity, and simple synthesis, this novel Fe–Cu–Al trimetal oxide offers a promising alternate for removing antimony contamination from aquatic environments.
Decrease in Secondary Neck Vessels in Multiple Sclerosis: A 5-year Longitudinal Magnetic Resonance Angiography Study
Authors: Jakimovski Dejan , Topolski Matthew , Kimura Kana , Pandya Virja , Weinstock-Guttman Bianca , Zivadinov Robert 
Published: June 2019

Background:
Studies have previously shown greater arterial and venous extracranial
vascular changes in persons with multiple sclerosis (PwMS) when compared to healthy controls
(HCs).

Objectives:
To determine the change in the number and size of secondary neck vessels in PwMS
and HCs over a 5-year follow-up period.

Methods:
Both at baseline and follow-up, 83 PwMS and 25 HCs underwent magnetic resonance
angiography (MRA) imaging and analysis. The number and cross-sectional area (CSA) of all secondary
neck vessels (excluding the common/internal carotid, vertebral artery, and internal jugular
vein) measured at levels from C2-T1 were determined by semi-automated edge detection/
contouring software. The longitudinal change in the number and CSA of the secondary neck
vessels from the PwMS and HCs were analyzed by non-parametric Wilcoxon repeated measure.
Benjamini-Hochberg procedure adjusted for false discovery rate (FDR).

Results:
For over 5 years, PwMS demonstrated a consistent longitudinal decrease in both the
number of secondary neck vessels (Z-change between -3.3 and -5.4, q=0.001) and their CSA (Zchange
between -2.9 and -5.2, q=0.004). On the contrary, the HCs did not demonstrate a significant
longitudinal change in secondary neck vessels over the follow-up period. Due to the longitudinal
decrease, the PwMS showed a lower number of secondary neck vessels when compared to
HCs measured at follow-up (p<0.029, except for C4 with trending p=0.071). The PwMS changes
were also corroborated within each MS phenotype.

Conclusion:
PwMS demonstrate a significant mid-term decrease in the number and the size of the
secondary neck vessels. The clinical relevance of these findings and the effect on intracranial
blood flow are currently unknown.
Leaf architecture and anatomy of Asteraceae species in a xerophytic scrub in Mexico City, Mexico
Authors: Rivera Patricia , Terrazas Teresa , Rojas-Leal Alicia , Villaseñor José Luis 
Published: June 2019

Background and Aims: Leaf architecture and anatomy in the Asteraceae family are extremely diverse and have been studied from ecological, physiological and evolutionary perspectives. The aims of this study are to describe in detail leaf architecture and anatomy for 61 species belonging to 13 tribes of Asteraceae inhabiting a xerophytic scrub in Mexico City, Mexico and to discuss characters common to these tribes.Methods: Mature and undamaged leaves of 61 species of Asteraceae were collected in southwestern Mexico City in the “Reserva Ecológica del Pedregal de San Ángel” (REPSA). Standard anatomical techniques were used to obtain permanent slides of cleared leaves and transverse and paradermal sections. The permanent slides were analyzed to describe leaf architecture and anatomy by tribe following the standard terminologies.Key results: The results show a significant variation in leaf architecture although pinnate venation, brochidodromous secondary venation, areoles moderately developed and looped ultimate marginal venation predominate in the material studied. For anatomy, the most common traits are the striate cuticle, occurrence of trichomes and glands, as well as collateral vascular bundles with a parenchymatous sheath with girders in the Asteraceae present in this xerophytic scrub. There are no unique combinations of leaf characters for the family or any tribe.Conclusions: Leaf diversity in the family and within each tribe is consistent with some previous reports. Anatomical descriptions are a fundamental piece of the evolutionary, ecological and physiological studies in Asteraceae. The results of this descriptive study will allow testing hypotheses about the factors causing leaf diversity in this plant lineage. More leaf anatomical studies of the family are necessary to confirm the patterns proposed for the tribes and the family.
Analisa Hasil Implementasi Standard Wi-Fi Direct pada Komunikasi Jaringan Ad-Hoc antar Kendaraan di Wilayah Bandung
Authors: Heriansyah Heriansyah 
Published: June 2019

Intisari — Penelitian ini akan menyajikan sebuah studi komprehensif tentang kinerja dan perilaku protokol perutean AODV dan DSDV dengan menggunakan standar Wi-fi Direct. Wi-fi Direct sendiri merupakan standar jaringan nirkabel baru yang memiliki potensi yang cukup unggul karena bisa digunakan sebagai alternatif untuk menggantikan standar DSRC di VANET. Untuk melihat unjuk kerja dari Wi-fi Direct maka akan dilakukan pengujian pada dua skenario perutean yang berbeda. Kedua skenario pengujian ini akan disimulasikan dengan model mobilitas yang sebenarnya yang ada di wilayah Kota Bandung melalui bantuan simulator NS-2 dan SUMO. Berdasarkan hasil simulasi yang didapat, protokol perutean AODV menghasilkan nilai QoS yang lebih optimal dibandingkan protokol perutean DSDV. Secara keseluruhan, unjuk kerja yang dihasilkan oleh standar Wi-fi Direct dan protokol perutean AODV layak dijadikan alternatif pengganti standar DSRC guna menghasilkan biaya implementasi yang lebih murah. Kata kunci — AODV, DSDV, VANET, DSRC, Wi-Fi Direct, QoS Abstract — This research will present a comprehensive study on the performance and behavior of AODV and DSDV routing protocols by using Wi-Fi Direct standard. DSRC is a well-known technology being considered as the most promising wireless standard in VANET. The potential of Wi-Fi Direct technology should be concerned because it can be an alternative to replace DSRC in VANET. Performance of Wi-fi Direct will be tested in two different routing scenarios. They will be simulated with a realistic mobility model in Bandung City to analyze the performance by using simulator NS-2 and SUMO. Based on simulation results, AODV routing protocol produces better QoS than DSDV routing protocol for Wi-fi Direct . Overall, the performance generated by the Wi-fi Direct standard and the AODV routing protocol deserve alternative to the DSRC standard in order to realize cheaper implementation costs. Keywords — AODV, DSDV, VANET, DSRC, Wi-Fi Direct, QoS
Automatic Emergency Lamp
Authors: Putra Rizki Pratama , Aglasia Adimas 
Published: June 2019

Abstract – The use of lights in daily activities is needed by humans, especially at night. However, when power failure, it will be a problem because the lights will also die. Therefore, in need of an alternative power source other than the PLN to replace the electric source of the lamp when the power off. To overcome this the authors use the battery as a replacement source of electrical voltage from the PLN which at the same time can be refilled automatically when the PLN electric current is on.keywords -- Index terms- Lamp, Emergency, Battery, Power
Deteksi Suhu Ruang Server dan Penggerak Kipas Berbasis Arduino Uno Dengan Report SMS
Authors: Arifin Jaenal , P Herryawan , Gultom Bukti 
Published: June 2019

Intisari---Suhu merupakan salah satu hal yang sangat berpengaruh terhadap kinerja perangkat keras khususnya ruang server. Ruang server adalah ruangan yang dapat digunakan untuk menyimpan data, perangkat jaringan dan operasional sistem. Deteksi suhu ruang server dirancang menggunakan 4 (empat) sensor LM35 yang berfungsi mendeteksi suhu didalam ruang server. Nilai suhu rata-rata ruang server ditampilkan pada LCD. Apabila suhu diruang server mengalami overheat, maka module GSM SIM900 akan mengirimkan informasi suhu ruang server ke administrator ruang server melalui sms. Perangkat deteksi suhu ruang server terdiri dari rangkaian catu daya, 4 (empat) sensor LM35, Arduino UNO, LCD, relay, kipas angin, module GSM dan handphone. Perangkat ini dapat monitoring suhu ruang server dan dapat memberikan informasi apabila suhu ruangan naik. Kipas angin berfungsi menormalkan suhu panas ruang server apabila suhu ruangan naik. Perangkat deteksi suhu pada ruang server ini mampu membantu administrator untuk memonitoring suhu ruang server dari jarak jauh dengan report SMS.Kata kunci--- Arduino Uno, Ruang Server, Sensor Suhu, GSM SIM900 Abstract---Temperature has a very influential impact on the performance of hardware, especially the one which is kept in a server room. The server room is a room that can be used to store data, network devices and operation systems. The detection system of server room’s temperature is designed by using 4 (four) LM35 sensors which functions is to detect the temperature in the server room. The value of average temperatures in the server room is displayed on the LCD. If the temperature in the server room reachs an overheated degree, the GSM SIM900 module will send the information about the temperature situation in the server room to the server room’s administrator by using an SMS. The server room’s temperature detection device consists of power supply circuits, 4 (four) LM35 sensors, Arduino UNO, LCD, relay, fan, GSM module and mobile phone. This device can monitor the temperature of the server room and can provide information when the room temperature rises. The fan’s function is to normalize the hot temperature in the server room when the room’s temperature rises above a certain degree. Temperature’s detection device in the server room is capable to help administrators to monitor the temperature of the server room remotely using an SMS report.Keywords--- Arduino Uno, Server Space, Temperature Sensors, GSM SIM900
Sistem Peringatan Dini untuk Pemborosan Penggunaan Listrik pada Masyarakat Provinsi Lampung dengan Menggunakan Model Analisis Regresi Linier dan SMS Gateway
Authors: Kesuma Rahman Indra , Darmawan Mahardika Yoga , Firmansyah Hafiz Budi 
Published: June 2019

Intisari — Saat ini masyarakat Indonesia cenderung sering melakukan pemborosan pada penggunaan listrik. Di sisi lain energi listrik di Indonesia mayoritas dihasilkan dari pembangkit listrik tenaga uap, yang membutuhkan bahan bakar dari sumber daya alam yang tidak dapat diperbaharui. Sehingga tingginya permintaan dan kejadian pemborosan dalam penggunaan listrik dapat meningkatkan konsumsi sumber daya alam serta polusi udara. Maka dari itu, dalam penelitian ini diusulkan sebuah solusi melalui sistem peringatan dini yang dapat menumbuhkan kesadaran masyarakat untuk melakukan penghematan dalam penggunaan listrik. Sistem ini membutuhkan data masukan berupa jumlah pemakaian listrik dalam 6 bulan terakhir, yang selanjutnya akan dibentuk pola penggunaan listrik dari setiap pengguna menggunakan analisis regresi linier. Selanjutnya dari pola yang diperoleh, diambil informasi pemakaian listrik perhari untuk dijadikan ambang batas pada pemberian peringatan pemborosan yang diprediksi akan terjadi. Sedangkan untuk penyebaran informasi ke pengguna tentang prediksi pemborosan, sistem ini menggunakan fasilitas SMS Gateway. Hasil penelitian ini adalah sistem yang dapat memberikan peringatan kepada pengguna jika penggunaan listriknya sudah melebihi ambang batas tertentu.Kata kunci — Sistem peringatan dini, pemborosan penggunaan listrik, analisis regresi linier, sms gateway. Abstract — Nowadays almost Indonesian people get inefficient management on the electricity usage. While, Indonesia is still use steam power plant to produce the electricity power, which require fuel from non-renewable natural resouces. So the highness of demand and the occurrence of inefficiency from the electricity usage may increase the consumption of natural resource and the air pollution. Therefore, a solution through an early warning system are proposed in this study, that would increase awareness of the people to use the electricity power become more efficient. This system require the data of electricity usage from each customers in the last 6 months, that will be generated the electricity usage trend from each customers using linear regression analysis. Furthermore from the trend data obtained, the daily electricity usage information will be taken to use as a threshold for giving the inefficiency warnings from electricity usage that will occur from the available prediction. Moreover, in this study also use SMS Gateway for send the information of inefficiency electricity usage prediction automatically to each customers. Finally, the experimental result from this study is the system that can provide a warning to customers if their electricity usage run over the certain thresholds.Keywords— Early warning system, inefficient of electricity usage, linear regression analysis, sms gateway.
Setting Kerja Waktu Relay Arus Lebih pada Penyulang Kikim di Gardu Induk Sungai Juaro
Authors: Savitri Sarinah Agi Dia , Ardianto Feby , Alfaresi Bengawan 
Published: June 2019

Intisari — Gangguan-gangguan yang sering terjadi pada operasi sistem tenaga listrik dapat mengakibatkan terganggunya penyaluran tenaga listrik ke konsumen, sehingga menimbulkan arus hubung singkat yang cukup besar, untuk menghindari akibat gangguan tersebut diperlukan perlindungan jaringan dengan memasang suatu relay proteksi. Tujuan dari penelitian ini adalah melakukan simulasi menggunakan software ETAP dan perhitungan arus hubung singkat serta setting waktu kerja relay arus lebih. Metode yang digunakan untuk menganalisis gangguan hubung singkat yaitu 1) identifikasi data, 2) simulasi, 3) perhitungan, 4) hasil dan analisis serta 5) kesimpulan. Hasil penelitian, simulasi software ETAP arus gangguan hubung singkat maksimum pada jarak 25% dengan arus gangguan tiga fasa sebesar 2877.341 A, dua fasa sebesar 2672.708 A, dan satu fasa sebesar 2491.835 A. Gangguan minimum pada jarak 100% dengan arus gangguan tiga fasa sebesar 502.032 A, dua fasa sebesar 434.671 A, dan satu fasa sebesar 347.035 A. Sedangkan untuk hasil simulasi waktu kerja relay arus lebih sisi incoming sebesar 1 detik dan sisi outgoing sebesar 0.55 detik, hasil perhitungan waktu kerja relay arus lebih sisi incoming sebesar 0.99 detik dan sisi outgoing sebesar 0.54 detik.Kata kunci — Gangguan Hubung Singkat, relay arus lebih, ETAP Power Station 12.6.0. Abstract — Interferences that often happen in an operation system of electric power can cause in disruption of distribution the electric power to consumers, so it causes quite large shor-circuit current. To avoid the impact of that inrerferences,setting relay portection to protect the network is needed. The purpose of the reserch is doing a simulation using ETAPsoftware, calculating the short-circuit current, and setting the working time of excess-current relay. The method that used to analyze the interferences of short-circuit current are : 1) data identifying, 2) Simulation, 3) calculation, 4) result and analysis and, 5) conclution. The results of the research show that the maximum interferences of short -circuit current at 25% of distance with three phase Interferences is 2877,341 A, two -phase is 2672,708 A, and one-phase is 2491,835 A. The minimum Interferences at 100% distance with three phase Interferences is 502,032 A, two -phase is 434,671 A, and one-phase is 347,035 A. And the result of the simulation time of excess-current relay on incoming side is 1 second and on feeder side is 0.55 second, the results of the calculation working time of excess-current relay on the incoming side are 0.99 second and on the feeder, a side is 0.54 secondKeywords— short circuit, over current relay, ETAP power station 12.6.0
Peningkatan Kapasitas Sasaran Pelaksana Program Persiapan Persalinan dan Pencegahan Komplikasi (P4K) Dalam Pelaksanaan Strategi Untuk Mengurangi Angka Kematian Ibu (AKI) di Kecamatan Panjang Kota Bandar Lampung
Authors: Yulianti Devi 
Published: June 2019

Tujuan umum yang dicapai dalam kegiatan ini adalah untuk menyebarluaskan hasil-hasil penelitian/kajian kepada masyarakat sebagai bagian dari upaya utuk memberdayakan dan meningkatkan kesejahteraan masyarakat, membangun kerjasama dan kemitraan dengan masyarakat sebagai perwujudan dan pengembangan kompetensi sosial di kalangan para dosen. Sedangakan tujuan khususnya adalah meningkatkan kapasitas sasaran pelaksanaan P4K di Puskesmas Kecamatan Panjang Kota Bandar Lampung dalam mengurangi AKI. Pelaksanaan kegiatan menggunakan metode ceramah dan diskusi. khalayak sasaran kegiatan seminar tentang peningkatan kapasitas sasaran pelaksana untuk menjalankan P4K adalah penanggung jawab dan pengelola program KIA Provinsi dan Kabupaten/Kota, bidan koordinator, kepala puskesmas, dokter, perawat, bidan, kader, forum peduli KIA (forum P4K/ pokja posyandu, dll). Lokasi kegiatan pengabdian ini adalah di Puskesmas Kecamatan Panjang Kota Bandar Lampung. Hasil kegiatan pengabdian membawa peningkatan kemampuan dasar peserta. Peningkatan terendah sebesar 10% dan peningkatan tertinggi sebesar 20%. Rata-rata peningkatan adalah sebesar 14,8%. Berdasarkan hasil dan evaluasi pelaksanaan pengabdian kepada masyarakat dapat disimpulkan beberapa hal sebagai berikut: 1). Kemampuan peserta pelatihan pada aspek kognetif dan afektif mengalami peningkatan dengan rata-rata sebesar 14,8%., 2).Hasil evaluasi menunjukan peserta memiliki persepsi positif dan motivasi yang tinggi untuk menjalankan point penting dalam pelatihan untuk membenahi metode dan proses pelaksanaan strategi untuk mengurangi angka kematian ibu, 3).Peserta menghendaki adanya pelatihan lanjutan.
Pembinaan Usaha Budidaya Kerang Hijau dan Ikan di Pulau Pasaran Lampung
Authors: Putri Berta 
Published: June 2019

Abstrak

Pulau Pasaran terletak di Teluk Lampung dan dikenal sebagai penghasil ikan teri, namun potensinya tidak hanya sebatas pengolahan ikan melainkan juga usaha budidaya salah satunya adalah kerang hijau (Perna viridis). Kondisi perairan Pulau Pasaran cukup mendukung untuk usaha budidaya terutama lokasi geografisnya yang dekat dengan pusat kota Bandar Lampung sehingga memudahkan dalam proses transportasi. Namun usaha kerang hijau masih belum optimal karena teknologi rakit yang sederhana serta belum adanya upaya polikultur. Khalayak sasaran merupakan pembudidaya kerang hijau di Pulau Pasaran, Bandar Lampung di mana proses pembinaan diawali dengan survei, focus group discussion, penguatan teori, praktek dan pemberian denplot serta evaluasi. Program pembinaan dan introduksi sistem polikuktur kerang dan ikan dapat diterima oleh masyarakat danlebih meningkatkan produktivitas usahbudidaya serta menjadikan Pulau Pasaran tidak hanya sebagai penghasil teri melainkan juga menjadi pusat produksi kerang hijau dan ikan di Lampung.

Kata kunci: pembinaan, budidaya, kerang hijau, ikan, Pulau Pasaran