bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamical linear modeling estimates of long-term ozone trends from homogenized Dobson Umkehr profiles at Arosa/Davos, Switzerland
Authors: Maillard Barras Eliane , Haefele Alexander , Stübi René , Jouberton Achille , Schill Herbert , Petropavlovskikh Irina , Miyagawa Koji , Stanek Martin , Froidevaux Lucien 
Published: November 2022

Abstract. Six collocated spectrophotometers based in Arosa/Davos, Switzerland, have been measuring ozone profiles continuously since 1956 for the oldest
Dobson instrument and since 2005 for the Brewer instruments. The datasets of these two ground-based triads (three Dobsons and three Brewers) allow for
continuous intercomparisons and derivation of long-term trend estimates. Mainly, two periods in the post-2000 Dobson D051 dataset show anomalies
when compared to the Brewer triad time series: in 2011–2013, an offset has been attributed to technical interventions during the renewal of the
spectrophotometer acquisition system, and in 2018, an offset with respect to the Brewer triad has been detected following an instrumental change on
the spectrophotometer wedge. In this study, the worldwide longest Umkehr dataset (1956–2020) is carefully homogenized using collocated and simultaneous Dobson and Brewer
measurements. A recently published report (Garane et al., 2022) described results of an independent homogenization of the same dataset performed by
comparison to the Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2) Global Modeling Initiative (M2GMI) model
simulations. In this paper, the two versions of homogenized Dobson D051 records are intercompared to analyze residual differences found during the
correction periods. The Aura Microwave Limb Sounder (MLS) station overpass record (2005–2020) is used as an independent reference for the
comparisons. The two homogenized data records show common correction periods, except for the 2017–2018 period, and the corrections are similar in
magnitude. In addition, the post-2000 ozone profile trends are estimated from the two homogenized Dobson D051 time series by dynamical linear modeling (DLM),
and results are compared with the DLM trends derived from the collocated Brewer Umkehr time series. By first investigating the long-term Dobson
ozone record for trends using the well-established multilinear regression (MLR) method, we find that the trends obtained by both MLR and DLM
techniques are similar within their uncertainty ranges in the upper and middle stratosphere but that the trend's significances differ in the lower
stratosphere. Post-2000 DLM trend estimates show a positive trend of 0.2 to 0.5 % yr−1 above 35 km, significant for Dobson D051 but lower and
therefore nonsignificantly different from zero at the 95 % level of confidence for Brewer B040. As shown for the Dobson D051 data record, the
trend only seems to become significantly positive in 2004. Moreover, a persistent negative trend is estimated in the middle stratosphere between 25
and 30 km. In the lower stratosphere, the trend is negative at 20 km, with different levels of significance depending on the period
and on the dataset.
Geographic Information System (GIS) as a basis for the next generation of hydrogeological models to manage the geothermal area Waiwera (New Zealand)
Authors: Kühn Michael , Präg Melissa , Becker Ivy , Hilgers Christoph , Grafe Andreas , Kempka Thomas 
Published: November 2022

Abstract. The geothermal hot water reservoir below the small town of Waiwera in New Zealand has been known to the indigenous Māori for many centuries. Overproduction by European immigrants led to a water level decrease and consequently artesian flow from the wells and the seeps on the beach ceased. The Te Kaunihera o Tāmaki Makaurau Auckland Council established the Waiwera Thermal Groundwater Allocation and Management Plan to allow the geothermal system to recover. For a sustainable operation, the management regime can be informed by hydrogeological models based on monitoring data. The underlying geological model has been revised according to field observations and an existing numerical model transferred to the newly developed software package TRANSPORTSE. Monitoring and digitally derived data have been integrated in a geographic information system (GIS).
Long-distance propagation of 162 MHz shipping information links associated with sporadic E
Authors: Chartier Alex T. , Hanley Thomas R. , Emmons Daniel J. 
Published: November 2022

Abstract. Sporadic E layers form in the daytime midlatitude ionosphere as a
result of wind shears in the mesosphere–lower-thermosphere compressing
metallic ions of meteoric origin into dense, narrow sheets extending over
hundreds or thousands of kilometers spatially. These layers are poorly
observed, being too narrow to be properly resolved by incoherent scatter
radar or path-integrated total electron content measurements. Sporadic E
layer peak densities can be resolved by ionosondes and by rocket-borne
Langmuir probes, but these techniques have major limitations in terms of
spatial and temporal coverage, and (for many ionosondes) maximum density
resolution. As a result, the density, occurrence, and spatial extent of
sporadic E layers are not well constrained by observations. The maximum
density of sporadic E is widely believed to be around 5–10×1011 electrons m−3 NmEs (equivalent to 6–9 MHz foEs), though
there are a few isolated reports of layers extending beyond 20 MHz (Chandra
and Rastogi, 1975; Maeda and Heki, 2014). Here, we identify sporadic E
layers using a huge database of 29 million 162 MHz automatic identification system (AIS) shipping transmissions collected over 3 d by a United
States Coast Guard (USCG) terrestrial monitoring network in the eastern
United States and Puerto Rico. Within this dataset, most (>99 %) links are explained by line-of-sight, surface-wave, and tropospheric
propagation, but a small population cannot be explained by these mechanisms.
In total, 6677 signals were identified from ships located over 1000 km from
the ground stations between 13 and 14 July 2021, and almost no long-distance
links were received at night or at any time on 15 July. This coincides with
intense (saturated) sporadic E in collocated ionosondes and in satellite
radio occultation data. The density of these layers might exceed 27 MHz
foEs or 9×1012 electrons m−3 NmEs. AIS transmissions
potentially provide an excellent means of identifying dense sporadic E
layers globally.
The evolution and restoration of European vertically arranged mechanical turret clocks before the 17th century
Authors: Lin Tsung-Yi , Lin Wen-Feng 
Published: November 2022

Abstract. From the 14th to 17th century in Europe, a variety of types of mechanical turret clocks were manufactured, many of which have been replaced or
abandoned. At present, vertically arranged mechanical turret clocks can be rarely found. This study mainly analyzed the mechanism and technology of
nine existing vertically arranged mechanical turret clocks manufactured in Europe from the 15th to the 17th century, in order to determine the
design rules based on mechanical evolution and variation. The systematical restoration of vertically arranged mechanical turret clocks in history
has resulted in 16 representative mechanism configurations of movements of mechanical turret clocks. The content and results of this study can
provide its readers a clearer understanding about the mechanism design and technology of the vertically arranged mechanical turret clocks of each
period throughout history in order to establish a comprehensive knowledge system. Furthermore, understanding the design concept of the vertically arranged
mechanical turret clock contributes to the establishment of every possible restoration design construction throughout history. These innovative
results not only provide new historical materials that could be applied in the research of science and technology history, but also contribute to
the development of creativity and science education teaching materials.
KAJIAN EFEKTIVITAS SIRUP BUNGA TELANG (Clitoria ternatea L.) TERHADAP KHASIAT TONIKUM PADA MENCIT PUTIH JANTAN(Mus musculus)
Authors: Dharmayanti Luky , Novia Devi , Munawar Agil 
Published: November 2022

Bunga telang (Clitoria ternatea L.) merupakan salah satu tanaman memiliki sejumlah bahan aktif yang memiliki potensi farmakologi sebagai antioksidan, yang dapat di manfaatkan untuk, penghilang lelah atau tonikum. Penelitian ini bertujuan untuk mengetahui efektivitas formula sirup bunga telang, sebagai tonikum pada mencit putih jantan (Mus musculus) dan menentukan pada dosis berapa, dapat memberikan efek tonikum yang optimum. Percobaan ini menggunakan metode ketahanan renang.Penelitian ini termasuk penelitian eksperimental dengan rancangan acak lengkap. Hewan uji berjumlah 25 ekor dibagi menjadi 5 kelompok, yaitu kelompok kontrol positif kafein, kelompok kontrol negatif Na CMC, dan kelompok perlakuan dengan dosis 1,30 g, 2,28 g, 3,36 g. Cara pengujian dengan cara mencit direnangkan, lalu di istirahatkan selama 30 menit setelah itu di beri perlakuan dan 60 menit, kemudian mencit di renangkan kembali. Data yang di peroleh berupa peningkatan aktivitas yang di dapat dari selisih waktu renang sebelum perlakuan dan setelah perlakuan.Berdasarkan hasil uji statistik, semua kelompok perlakuan menunjukkan perbedaan bermakna (p<0,05). Hasil penelitian menunjukkan formula sirup bunga telang pada dosis 3,36 g mempunyai efek tonikum yang paling tinggi.Kata Kunci : Sirup, Bunga telang, Tonikum, antioksidan.
STABILITAS BETASIANIN DARI SARI KULIT BUAH NAGA MERAH (Hylocereus polyrhizus) TERHADAP SUHU, pH DAN KONDISI PENYIMPANAN
Authors: Kuncoro Hadi 
Published: November 2022

Betasianin merupakan pigmen yang masuk dalam golongan betalain. Stabilitas dari betasianin dapat dipengaruhi oleh suhu, pH dan kondisi penyimpanan. Kulit buah naga merah (Hylocereus polyrhizus) merupakan salah satu tumbuhan yang memiliki senyawa betasianin yang sudah banyak diteliti dan memberikan manfaat. Penelitian ini bertujuan melakukan pengujian stabilitas betasianin dari sari kulit buah naga merah terhadap suhu, pH dan kondisi penyimpanan. Metode yang digunakan ialah dengan mengukur absorbansi dari betasianin menggunakan spektrofotometer UV-Vis dengan setiap perlakuan suhu, pH dan kondisi penyimpanan yang berbeda serta waktu penyimpanan kulit yang berbeda. Hasil yang didapatkan diantaranya ialah kadar betasianin dari sari kulit buah naga merah pada suhu dingin, suhu sejuk serta suhu ruang mengalami peningkatan dan mengalami penurunan pada suhu pemanasan. Kadar betasianin pada pH dengan rentang 1-5 mengalami peningkatan dan mengalami penurunan pada pH 6-8. Kadar betasianin pada kondisi penyimpanan wadah tertutup atau terbuka dengan periode selama 14 hari mengalami penurunan kadar dan pada wadah tertutup, penurunan kadar betasianin lebih rendah dibandingkan dengan wadah terbuka. Kadar betasianin pada kulit buah naga segar lebih tinggi dibandingkan dengan kulit buah naga yang disimpan dalam kulkas selama dua minggu. Sehingga, dapat disimpulkan bahwa kadar betasianin dari sari kulit buah naga merah stabil pada suhu ruang dengan pH 5 dan dengan kondisi penyimpanan wadah tertutup serta dengan kulit buah naga segar.
SKRINING FITOKIMIA METABOLIT SEKUNDER EKSTRAK ETIL ASETAT TANAMAN BANDOTAN (Ageratum Conyzoides L.) YANG DIAMBIL DARI PESISIR PANTAI PANJANG KOTA BENGKULU
Authors: Versita Riana 
Published: November 2022

Tanaman Bandotan merupakan tanaman yang sering jumpai di perkarangan rumah, persawahan, perkebunan, pesisir pantai yang tumbuh liar oleh masyarakat sekitar sering dimanfaatkan sebagai obat herbal, untuk luka baik luka bakar ataupun luka sayat, karena kandungan dari senyawa metabolit sekunder yang dimiliki. Tujuan dilakukanya riset ini untuk mengetahui kandungan senyawa metabolit sekunder apa saja yang ada pada tumbuhan bandotan (Ageratum conyzoides L).”Metode yang digunakan adalah metode maserasi dengan pelarut etil asetat dan dilanjutkan dengan menggunakan alat rotary evaporator untuk memperoleh hasil ekstraksi yang maksimal dan sampel di peroleh dari pesisir pantai panjang kota Bengkulu.”Hasil penelitian menunjukan bahwa tanaman bandotan yang di ekstraksi menggunakan etil asetat mengadung senyawa alkaloid, triterpenoid, dan tanin. Kesimpulan pada penelitian ini adalah kandungan yang terdapat pada tumbuhan bandotan yang di ekstraksi menggunakan pelarut etil asetat yaitu alkaloid, triterpenoid, dan tanin
ANALISA VITAMIN B1 PADA MAKANAN OLAHAN KACANG KEDELAI MENGGUNAKAN METODE SPEKTROFOTOMETRI
Authors: Herlina Herlina 
Published: November 2022

Thiamin (Vitamin B1) merupakan salah satu jenis vitamin yang tidak stabil. Stabilitasnya dipengaruhi oleh pH, suhu dan cara pengolahannya. Pencucian merupakan faktor penting yang mempengaruhi kehilangan tiamin dalam bahan pangan. Kedelai merupakan salah satu tumbuhan yang banyak mengandung vitamin B1. Kacang kedelai biasa dikonsumsi dalam produk olahan seperti tempe, tahu, susu kedelai, kecap dan lain-lain. Tujuan dari penelitian ini yaitu untuk identifikasi dan penetapan kadar vitamin B1 pada kacang kedelai dan olahan kacang kedelai. Penelitian dilakukan dengan melakukan pengujian kualitatif dengan reaksi tiokrom dan timbal asetat, lalu dilakukan pengujian kuantitatif dengan metode spektrofotometri visible yaitu dengan pembuatan larutan induk, penentuan panjang gelombang maksimum, pembuatan kurva kalibrasi, dan penetapan kadar vitamin B1 pada kacang kedelai dan olahan kacang kedelai (Tempe, Tahu, Susu Kedelai, dan Kecap) dengan menggunakan spektofotometri visible dengan panjang gelombang 616 nm. Hasil penelitian menunjukkan kacang kedelai dan olahan kacang kedelai (Tempe, Tahu, Susu Kedelai, dan Kecap) positif mengandung vitamin B1. Hasil kadar vitamin B1 tertinggi berturut-turut yaitu kacang kedelai 0,465% , Kecap 0,362% , Tempe 0,340% , Tahu 0,306% , Susu kedelai 0,206%. Hal ini menunjukan proses pengolaan mempengaruhi kadar vitamin B1. Kata Kunci : Kacang Kedelai, Vitamin B1, Spektrofotometri UV-Vis
PENGGUNAAN PENGENTAL ALAM MANUTEKS PADA PENCAPAN BAHAN POLIESTER DENGAN ZAT WARNA PIGMEN
Authors: Taufik Agus , Lisandri Yudha Hanif , Alia A Luthfiyah 
Published: November 2022

Penelitian ini mengkaji tentang optimalisasi penggunaan pengental alam Manuteks pada pencapan kain polyester dengan zat warna pigmen menggunakan pasta cap sistem larutan (bebas dari pelarut minyak). Zat warna pigmen itu sendiri tidak memiliki afinitas terhadap serat, oleh karena itu fiksasinya ke dalam serat diperlukan bantuan zat pengikat yaitu binder. Tahapan yang akan dilakukan dalam penelitian ini adalah proses pencapan bahan tekstil dengan pasta cap system larutan, selajutnya dilakukan proses pemanas awetan kemudian dilakukan pengujian kualitas bahan hasil pencapan. Pada penelitian ini digunakan zat warna pigmen imperon, dengan variasi pemakaian pengental sebanyak 5g; 10 g; 15 g; 20 g; dan 25 g dan suhu pemanas awetan divariasikan 120 ºC; 130 ºC; 140 ºC. Hasil pengujian menunjukkan bahwa penmbahan jumlah pemakaian pengental dan kenaikan suhu pemanasawetan akan memperkecil terjadinya perembesan motif hasil pencapan dan menaikkan kekakuan kainn. Hasil optimum dari penelitian diperoleh pada pemakaian pengental sebanyak 20g dan suhu pemanas awetan 130º C, dengan nilai kekakuan sebesar 48,50 g.cm untuk arah lusi dan 43,97 g.cm untuk arah pakan. Sedang pada sistem emulsi dikerjakan pada suhu pemanas awetan 140º C. nilai kekakuan kainnya sebesar 45,18 g.cm arah lusi dan 29,28 g.cm arah pakan.
Examining The Prediction of Digital Game Addiction Awareness on Digital Educational Game Usage
Authors: KARABULUT COŞKUN Burcu , AKÇAY Arif 
Published: November 2022

Background: Individuals need to be conscious and aware not to experience the negative effects of digital games and identify the difference between dijital games and digital educational games. The use of digital educational games has four sub-dimensions. These are the "affective approach", the "perceived usefulness," "perceived control," and "behavioral approach” (Sarıgöz, Bolat, & Alkan, 2018). In this study, these sub-dimensions analyzed in the frame of digital game addiction awareness.
Purposes: This study examines the predictors of pre-service teachers' awareness of digital game addiction and their use of digital educational games.
Methodology/Approach: The data of this study, in which the correlational predictive research method was used, were collected through the Digital Game Addiction Awareness Scale and the Digital Educational Game Use Scale.
Findings: As a result of the study in which 246 pre-service teachers participated; there is a negative relationship between pre-service teachers' awareness of digital game addiction and their emotional approach towards their use of digital educational games, their perceived usefulness of digital educational games, their perceived control in digital educational games using and their behavioral approaches to digital educational game use, which expresses the preference of digital educational games over other games, and the relationship between digital educational game playing situations are determined. In addition, it was determined that all of these relationships were predictive.
Discussion: Digital educational games are played to learn. While it is expected that teacher candidates' awareness of digital game addictions will increase, it is recommended to raise awareness of the benefits of digital educational games so that they do not have negative feelings about digital educational games.
UPAYA MENINGKATKAN MINAT DAN HASIL BELAJAR IPS MENGGUNAKAN METODE TEKA-TEKI SILANG PADA SISWA KELAS IX F SMP NEGERI 1 DAYEUHLUHUR
Authors: Irianti Taat Setyani 
Published: November 2022

Kurangnya minat serta rendahnya hasil belajar siswa kelas IX F di SMP Negeri 1 Dayeuhluhur pada mata pelajaran ips menjadi latar belakang penelitian tindakan kelas ini,.untuk meningkatkan minat dan hasil belajar siswa, peneliti mencoba menerapkan pembelajaran dengan menggunakan metode teka-teki silang.Penelitian tindakan kelas ini dilaksanakan pada bulan Oktober - November 2020, yang dilaksankan dalam 2 siklus yang masing-masing siklus terdiri dari dua kali pertemuan, dengan subyek penelitian adalah siswa kelas IX F SMP Negeri 1 Dayeuhluhur sejumlah 30 siswa. Tehnik pengumpulan data menggunakan observasi, catatan lapangan, dan dokumentasi.Tehnik analisis data yang digunakan yaitu tehnik analisis data kualitatif, penyajian data dan penarikan kesimpulan.Kriteria keberhasilan dalam penelitian ini adalah apabila rata-rata persentasi indicator minat belajar siswa mencapai 75% dan 75% dari jumalh siswa kelas IX F memiliki nilai minimal 70.Hasil penelitian dapat disimpulkan bahwa penerapan metode pembelajaran Teka-teki silang dapat meningkatkan minat belajar dan hasil belajar siswa dalam pembelajaran ips di Smp Negeri 1 Dayeuhluhur.
Before and After
Authors: Redazione La 
Published: November 2022

Before and after. Prima e dopo. Prima e dopo una pandemia? Una guerra? Un cambiamento globale? Come siamo cambiati rispetto a prima? E come cambieremo in questa nuova era? È questo il fil rouge protagonista di tutta la settima edizione di Groundbreaking. In questo nuovo numero, ci siamo soffermati nel mezzo della trasformazione, «in-between» appunto, per osservare quello che sta succedendo nel mondo della moda. Né prima, né dopo. Infatti, abbiamo utilizzato le basi solide del passato per capire il futuro della creatività. E abbiamo ipotizzato il futuro del fashion system senza dimenticare il passato, sempre e comunque grande fonte di ispirazione.
CODAs and SIGN LANGUAGE
Authors: KARAHAN Gül , DUYAN Veli 
Published: November 2022

The aim of this research is to explore the meaning of sign language for CODAs through a qualitative design and phenomenological approach.
The study group of the research consisted of 15 female and 15 male CODAs. The data of the study were collected through in-depth interviews with the participants using a semi-structured interview form and data analysis was conducted using MAXQDA 2020 software. In the research, it was determined that CODAs attribute a special meaning to sign language beyond being a means of communication. Sign language has a central place in their lives, both because of the emotional connection they have established and because it enables them to have a profession and a job. The fact that it enables them to make the deaf visible in society, to help the deaf, to take part in various social responsibility projects for the deaf are important dynamics in the process of making sense of sign language.
Sign language is also the language they prefer to use extensively. Language use preferences in their daily lives are structured on the basis of habits. As children of deaf parents, the lives of CODAs, as part of the deaf community, involve interaction with both the deaf and hearing community, and the findings of the study show that the participants are heavily engaged with the deaf community. One of the important findings of the research is that CODAs intensely feel a sense of belonging to the deaf community.
Influence of Base Material and Addition of Complexing Agent to Deposition Bath for Galvanic Preparation of SERS-active Layers and Spectra of Riboflavin
Authors: Koryťáková Adéla , Volochanskyi Oleksandr , Král Martin , Švecová Marie 
Published: November 2022

SERS spectroscopy remains not a well-established analytical technique mainly because of the complicated preparation of SERS-active substrates, which often have low reproducibility. For this reason, the development of new or optimization of existing substrates is important. For testing the SERS activity of these substrates, the so-called model analytes are commonly used. One of them is riboflavin, which is utilized for its non-toxicity and suitable optical properties.
This work is focused on optimizing the enhancing properties of galvanically prepared silver substrates. The influence of the base material (Al and its alloys, Zn) and of the addition of a complexing agent (EDTA) into the Ag deposition bath on the spectral response of riboflavin was evaluated. Each prepared substrate was characterized by scanning electron microscopy, and the SERS spectra were collected using an excitation wavelength of 1064 nm. All data were subsequently processed and interpreted using multivariate statistics, namely principal component analysis. The most universal and suitable base material for the preparation of Ag substrate for riboflavin detection was the AlMg alloy. The addition of a complexing agent to the deposition bath changed the morphology of the prepared substrates and the highest spectral response of riboflavin was obtained by adding 0.55 mM EDTA. The intensity of riboflavin spectral response was comparable to the value obtained using substrates prepared in the Ag bath, but the substrates prepared in the AgNO3 solution achieved a weaker enhancement of the spectral response.