bluuebunny/crossref_metadata_2025 huggingface dataset:
Okulare Flusssäureexposition – Fallbericht einer erfolgreichen gemeinsamen Patientenversorgung durch Telenotarzt und bodengebundenen Notarzt
Authors: von Au Josephine , Brinkrolf Peter , Rübsam Marie-Luise
Published: December 2023

Wir berichten über einen 42-jährigen Mann, der im Rahmen seiner beruflichen Tätigkeit eine
akzidentielle Exposition mit dem Gefahrstoff „Flusssäure“, einer wässrigen Lösung von
Fluorwasserstoff, hatte. Bereits auf der Anfahrt konnte die diensthabende Telenotärztin die
Notärztin mit fundierten Fachinformationen zum Gefahrstoff, den voraussichtlichen Symptomen
und Dosierungen der Notfallmedikamente unterstützen, sodass die Notärztin beim Eintreffen am
Einsatzort bereits über alle Informationen zu notwendigen Maßnahmen und entsprechende
Berechnungen der Verdünnungsreihe verfügte. Der kreislaufstabile Patient klagte über
Fremdkörpergefühl im linken Auge. Nach einer prioritätsgeleiteten Untersuchung wurde die
begonnene Augendusche fortgesetzt und eine 1%ige Calciumgluconat-Lösung lokal aufgetragen. Der
Patient wurde zur weiteren Behandlung in die nahe gelegene Universitätsklinik gebracht.
Validation of Three Models for Prediction of Blood Transfusion during Cesarean Delivery Admission
Authors: Bruno Ann M. , Federspiel Jerome J. , McGee Paula , Pacheco Luis D. , Saade George R. , Parry Samuel , Longo Monica , Tita Alan T.N. , Gyamfi-Bannerman Cynthia , Chauhan Suneet P. , Einerson Brett D. , Rood Kara , Rouse Dwight J. , Bailit Jennifer , Grobman William A. , Simhan Hyagriv N. ,   for the Eunice Kennedy Shriver National Institute of Child Health Human Development Maternal-Fetal Medicine Units Network
Published: December 2023

Objective Prediction of blood transfusion during delivery admission allows for clinical preparedness and risk mitigation. Although prediction models have been developed and adopted into practice, their external validation is limited. We aimed to evaluate the performance of three blood transfusion prediction models in a U.S. cohort of individuals undergoing cesarean delivery.

Study Design This was a secondary analysis of a multicenter randomized trial of tranexamic acid for prevention of hemorrhage at time of cesarean delivery. Three models were considered: a categorical risk tool (California Maternal Quality Care Collaborative [CMQCC]) and two regression models (Ahmadzia et al and Albright et al). The primary outcome was intrapartum or postpartum red blood cell transfusion. The CMQCC algorithm was applied to the cohort with frequency of risk category (low, medium, high) and associated transfusion rates reported. For the regression models, the area under the receiver-operating curve (AUC) was calculated and a calibration curve plotted to evaluate each model's capacity to predict receipt of transfusion. The regression model outputs were statistically compared.

Results Of 10,785 analyzed individuals, 3.9% received a red blood cell transfusion during delivery admission. The CMQCC risk tool categorized 1,970 (18.3%) individuals as low risk, 5,259 (48.8%) as medium risk, and 3,556 (33.0%) as high risk with corresponding transfusion rates of 2.1% (95% confidence interval [CI]: 1.5–2.9%), 2.2% (95% CI: 1.8–2.6%), and 7.5% (95% CI: 6.6–8.4%), respectively. The AUC for prediction of blood transfusion using the Ahmadzia and Albright models was 0.78 (95% CI: 0.76–0.81) and 0.79 (95% CI: 0.77–0.82), respectively (p = 0.38 for difference). Calibration curves demonstrated overall agreement between the predicted probability and observed likelihood of blood transfusion.

Conclusion Three models were externally validated for prediction of blood transfusion during cesarean delivery admission in this U.S. cohort. Overall, performance was moderate; model selection should be based on ease of application until a specific model with superior predictive ability is developed.

Key Points
Recurrent Hypokalemic Paresis–A Possibility of Liddle-Gitelman Overlap
Authors: Siddiqui Nauman Amin , Goel Vrinda , Narang Shiva , Aggarwal Amitesh
Published: December 2023

Hypokalemia can occur due to various causes that have diverse manifestations varying from mild asthenias to acute onset paraparesis to life-threatening cardiac arrhythmias. A proper algorithmic evaluation for hypokalemia can help us identify various correctable causes and can be life-saving. Here, we discuss a case of 35-year-old hypertensive female who had presented as a case of acute onset flaccid paraparesis. We have further discussed our approach in reaching her diagnosis and stressed upon importance of algorithmic approach in the evaluation of patients presenting with recurrent hypokalemia. It may help in unmasking a rarer cause.
Design, analysis, and testing of a new asymmetric vibration-assisted stage for roll-type polishing
Authors: Gu Yan , Xu Zisu , Lin Jieqiong , Liu Silin , Xu Xingwang , Chen Hongyu , Fu Bin , Xi Yuan
Published: December 2023

Based on the technological characteristics of roll-type polishing, a new asymmetric vibration-assisted stage is proposed in this paper. This stage is characterized by asymmetric displacement and asymmetric stiffness. With the average particle spacing of roll-type polishing as the constraint, the comprehensive characteristics of structural stiffness, kinematic range, and natural frequency are realized. Thus, to reduce the surface roughness, the removal of simple-directional surface textures generated by roll-type polishing can be achieved. First, the asymmetric structure is designed, modeled, and optimized according to working performance design goals of roll-type polishing. Then, the finite element analysis and actual performance test of the stage are carried out to verify the accuracy of the established model and the effectiveness of the optimization design. The results indicate that the stage can meet the design index. Finally, the asymmetric vibration-assisted polishing experiment is carried out. The results show that the single-directional surface textures of the SiC surface are interrupted and the surface roughness is decreased.
Coherent and incoherent phonon transport in periodic nitrogen-doped graphene
Authors: Li Xin , Liu Yingguang , Li Hengxuan
Published: December 2023

Nitrogen-doped graphene materials hold significant promise for diverse applications owing to their exceptional electrical properties and the tunability of thermal conductivity. Therefore, the non-equilibrium molecular dynamics simulations were used to explore the phonon transport properties of nitrogen-doped graphene nanoribbons. The findings indicate that periodic doping with a small quantity of nitrogen atoms can induce coherent phonon transport, thereby resulting in a substantial reduction in thermal conductivity. Our analysis delves into various phonon and energy transport parameters, including the phonon dispersion relation, group velocity, state density, participation rate, and spectral heat flow. Through this examination, we have elucidated the coexistence and transformation mechanisms of both coherent and incoherent phonon transport under different conditions. Furthermore, our findings revealed a notable trend: once the concentration of nitrogen atoms in the doped atomic layer reaches 37.5%, the reduction in thermal conductivity attains its maximum effectiveness. Beyond this concentration, further increases in the nitrogen atom concentration result in diminishing returns, rendering the reduction in thermal conductivity ineffective.
Optical emission spectroscopy of vanadium cathodic arc plasma at different nitrogen pressure
Authors: Kovtun Yu. V. , Kuprin A. S. , Shapoval A. N. , Leonov S. A. , Vasilenko R. L. , Besedina Yu. A.
Published: December 2023

Optical emission spectroscopy studies of vanadium plasma in a cathodic-arc discharge in a nitrogen atmosphere have been carried out. Spectral lines of neutral atoms and ions of the cathode material V, V1+, and V2+, and nitrogen N2 and N2+ were observed in the discharge plasma. Analysis and comparison of the intensity of vanadium and nitrogen spectral lines as a function of nitrogen pressure showed that in vacuum excited ions V2+ and V+ are registered, with increasing pressure, the lines V+*, N2*, and N2+* are observed, and at pressures above 0.5 Pa, the neutral vanadium lines are additionally registered. The electron temperature of Te decreases from 5.9 to 3–4 eV with increasing pressure. Studies of cross-sectional scanning electron microscopy images of VN coatings deposited at different nitrogen pressures have shown that a dense, homogeneous, fine-grained microstructure is formed in the coating when the number of neutral V in the plasma is low, while in the presence of a large number of neutrals, the coating structure changes to a dense structure with columnar growth.
Using wafer scale ferroelectric domains of LiNbO3 to form permanent planar p–n junction in narrow band gap nanocrystals
Authors: Cavallo Mariarosa , Ram Ankita , Pandey Satakshi , Maroutian Thomas , Bossavit Erwan , Ledos Nicolas , Khalili Adrien , Zhang Huichen , Prado Yoann , Nguyen Do Lam , Dang Tung Huu , Majjad Hicham , Biscaras Johan , Avila Jose , Dayen Jean Francois , Lhuillier Emmanuel , Pierucci Debora
Published: December 2023

p–n junctions based on nanocrystals now serve as fundamental components in optoelectronics. However, the process of designing these p–n junctions has largely relied on empirical choices, either for ligand exchange or for the selection of charge transport layers. Therefore, a systematic strategy is still lacking. In this study, we explore the utilization of ferroelectric domains as a general method for remotely inducing the formation of a p–n junction. To ensure compatibility with devices of various designs, we employ a commercially available periodically poled LiNbO3 (PPLN) substrate commonly used in nonlinear optics. We engineer a PPLN/graphene/HgTe heterostructure and demonstrate its planar photodiode behavior. Through x-ray photoemission microscopy, we confirm that the rectifying behavior stems from the influence of the ferroelectric domains, by ruling out the possibility of the formation of non-ohmic contacts at the electrode/semiconductor interfaces. This approach proves to be quite general and holds promise for the future design of high-speed nanocrystal-based photodiodes.
Monovalent SARS-COV-2 mRNA vaccine using optimal UTRs and LNPs is highly immunogenic and broadly protective against Omicron variants
Authors: Ye Zhongfeng , Bonam Srinivasa Reddy , McKay Lindsay G. A. , Plante Jessica A. , Walker Jordyn , Zhao Yu , Huang Changfeng , Chen Jinjin , Xu Chutian , Li Yamin , Liu Lihan , Harmon Joseph , Gao Shuliang , Song Donghui , Zhang Zhibo , Plante Kenneth S. , Griffiths Anthony , Chen Jianzhu , Hu Haitao , Xu Qiaobing
Published: December 2023

The emergence of highly transmissible severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern (VOCs) that are resistant to the current COVID-19 vaccines highlights the need for continued development of broadly protective vaccines for the future. Here, we developed two messenger RNA (mRNA)-lipid nanoparticle (LNP) vaccines, TU88mCSA and ALCmCSA, using the ancestral SARS-CoV-2 spike sequence, optimized 5′ and 3′ untranslated regions (UTRs), and LNP combinations. Our data showed that these nanocomplexes effectively activate CD4
+
and CD8
+
T cell responses and humoral immune response and provide complete protection against WA1/2020, Omicron BA.1 and BQ.1 infection in hamsters. Critically, in Omicron BQ.1 challenge hamster models, TU88mCSA and ALCmCSA not only induced robust control of virus load in the lungs but also enhanced protective efficacy in the upper respiratory airways. Antigen-specific immune analysis in mice revealed that the observed cross-protection is associated with superior UTRs [Carboxylesterase 1d (Ces1d)/adaptor protein-3β (AP3B1)] and LNP formulations that elicit robust lung tissue-resident memory T cells. Strong protective effects of TU88mCSA or ALCmCSA against both WA1/2020 and VOCs suggest that this mRNA-LNP combination can be a broadly protective vaccine platform in which mRNA cargo uses the ancestral antigen sequence regardless of the antigenic drift. This approach could be rapidly adapted for clinical use and timely deployment of vaccines against emerging and reemerging VOCs.
How syntactic gradience in L1 affects L3 acquisition
Authors: Żychliński Sylwiusz , Skałba Anna , Wrembel Magdalena , Kaźmierski Kamil
Published: December 2023

The article reports on a longitudinal study of syntactic cross-linguistic influence (CLI) among L1 Polish learners
of L2 English and L3 Norwegian. The study mainly aimed to determine the influence of gradience in L1 on third language
acquisition. To this end, four syntactic properties were tested, two of which exhibit similarity between Polish and Norwegian
(subject-oriented possessive pronouns and adverb placement), and the other two – between English and Norwegian (definite and
indefinite articles). A group of 24 learners of Norwegian participated in an acceptability judgment task, which was administered
at three data collection times in all three languages. It aimed not only to determine the presence (and sources) of CLI, but also
to observe how gradience in L1 affects the assessment of equivalent properties in L3. In order to assess the role played by
gradience, the trilinguals’ performance was compared to that of a control group of English-Norwegian bilinguals. The data were
analyzed with mixed-effects ordinal logistic regression modelling, which showed statistically significant differences in the
ratings of articles between the two groups. We attribute this finding to gradient acceptability characterizing subject-oriented
pronouns and adverb placement in Polish, which is a potential source of non-facilitative CLI.
“Let’s Just Forget It!”
Authors: Hamaguchi Toshiko
Published: December 2023

Using recorded interactions between nursing home residents and care staff, this study demonstrates interactional
strategies of younger recreation workers during a weekly recreational activity named Tea Time Talk that serves to reduce
generational as well as epistemic gaps with the residents. This study focuses on how older residents’ reference to memory loss or
forgetfulness is deindividuated and trivialized by humorously framing it as something the participants can forget together. I will
claim that such intergenerational interactions on a regular basis help create solidarity between the residents and nursing home
staff, as well as maintain dignity of and respect towards the older residents who often experience a sense of exclusion from the
‘here and now’ which affects their life satisfaction at the end-of-life stage.
Modulation of High-Order Harmonic Generation from a Monolayer ZnO by Co-rotating Two-Color Circularly Polarized Laser Fields
Authors: Qiao 乔 Yue 月 , Chen 陈 Jiaqi 家祺 , Zhou 周 Shushan 书山 , Chen 陈 Jigen 基根 , Jiang 蒋 Shicheng 士成 , Yang 杨 Yujun 玉军
Published: December 2023

By numerically solving the two-dimensional semiconductor Bloch equation, we study the high-order harmonic emission of a monolayer ZnO under the driving of co-rotating two-color circularly polarized laser pulses. By changing the relative phase between the fundamental frequency field and the second one, it is found that the harmonic intensity in the platform region can be significantly modulated. In the higher order, the harmonic intensity can be increased by about one order of magnitude. Through time-frequency analysis, it is demonstrated that the emission trajectory of monolayer ZnO can be controlled by the relative phase, and the harmonic enhancement is caused by the second quantum trajectory with the higher emission probability. In addition, near-circularly polarized harmonics can be generated in the co-rotating two-color circularly polarized fields. With the change of the relative phase, the harmonics in the platform region can be altered from left-handed near-circularly polarization to right-handed one. Our results can obtain high-intensity harmonic radiation with an adjustable ellipticity, which provides an opportunity for syntheses of circularly polarized attosecond pulses.
A novel frog-like meta-structure with linkage mechanism for low-frequency vibration isolation
Authors: Li Xiaoyun , Wang Jixiao , Chai Yijun , Yang Xiongwei , Wang Chunming , Li Yueming
Published: December 2023

Structures with linkage mechanism, which could be widely seen in engineering, usually need to bear a certain load and exhibit ideal vibration isolation performance. One of the key factors affecting the mechanical and vibration properties is the connection behavior of the linkage mechanism. To clarify its influence on the vibration characteristics, a novel frog-like meta-structure by introducing a linkage mechanism into the conventional locally resonant metamaterial with a mass-spring resonator is proposed in the present paper, in which the linkage connection is considered as three types of hinged, fixed and elastic, respectively. The equivalent dynamic model of the meta-structure is established theoretically to calculate the effective material properties, which is then validated numerically through band gap and vibration analysis. The results show that the hinged linkage offers equivalent mass and free vertical displacement, while the fixed linkage provides supporting stiffness, shifting the band gap towards higher frequencies. An appropriate elastic connection can enhance the ‘spring-vibrator’ effect, which in turn can significantly expand the low-frequency vibration suppression range of the structure. Experiments are also conducted corresponding to the different linkage mechanisms, and the dynamic model is verified. This study could provide a new idea for promoting the application of the locally resonant meta-structure with a linkage mechanism in the field of low-frequency vibration isolation.
Optical orbital angular momentum transfer to electronic currents
Authors: Emile Olivier , Emile Janine
Published: December 2023

Light orbital angular momentum (OAM) is transformed into an electronic current loop in a copper coil, by absorption of the optical radiation. The measurement of this current, that is in the 10−17 A range, makes it possible to evaluate and quantify the OAM carried by an electromagnetic wave in the optical domain. In particular, it determines unambiguously the torque generated by the beam and its topological charge. The induced current depends on the optical power and on the wavelength, in good agreement with theoretical predictions. Further possible developments towards an optical torque-meter are then discussed.
Silver-TiO2 coated D-shaped photonic crystal fiber based SPR sensor for ultrasensitive refractive index detection: design and FEM analysis
Authors: Divya J , Selvendran S , Raja A Sivanantha , Chitra K
Published: December 2023

Photonic crystal fiber (PCF) based surface plasmon resonance (SPR) sensors are emerging as a promising technology for ultrasensitive detection of various biological and chemical analytes. This paper presents a novel D-shaped PCF based SPR sensor, which has shown great potential for highly sensitive detection of refractive index (RI) changes. The D-shaped configuration is achieved through the polishing of the upper side of the PCF fiber. To enhance sensitivity, a 0.1 μm silver layer is strategically placed between the fiber and analyte, intensifying light–matter interactions. Additionally, a 0.05 μm titanium dioxide (TiO2) layer is employed not only to further boost sensitivity but also to shield the metal from oxidation, ensuring the longevity and stability of the sensor. The finite element method (FEM) is employed to optimize the structural parameters of the sensor design. The findings demonstrate that the proposed SPR sensor is sensitive to RI changes in the 1.31–1.35 range, achieving a peak wavelength sensitivity of 30000 nm RIU−1 and an amplitude sensitivity of −185.33 RIU−1. The sensor holds promise for diverse applications, including chemical and biological sensing, making it a versatile tool with promising implications for advancing sensing technologies in various domains.
Strong gravitational lensing of blazar gamma-radiation and intergalactic magnetic fields
Authors: Eroshenko Yu. N.
Published: December 2023

The influence of intergalactic magnetic fields on the strong gravitational lensing of blazar secondary gamma radiation is discussed. Currently, two cases of strong gravitational lensing of blazar gamma-radiation are known, where radiation is deflected by galaxies on the line of sight between the blazars and Earth. The magnetic field can affect the movements of electron-positron pairs generated by primary radiation, thereby changing the directions of secondary gamma radiation. It modifies the equation of the gravitational lens and leads to the dependence of the observed signal in the secondary gamma radiation on the energy of photons and magnetic field. Accordingly, it is possible, in principle, to estimate the intergalactic magnetic fields from the time delay of signals, from the angular position of images (for future high-resolution gamma-ray telescopes) or from the shape of the observed energy spectrum. This method is demonstrated by the example of the blazar B0218+357. In this case, however, it is not possible to obtain useful constraints due to the large distances to the blazar and lens galaxy. The result is only a lower limit on the magnetic field

G, which is weaker than other existing constraints. However, future discoveries of lensed blazars may provide more favorable opportunities for measuring the magnetic fields, especially with the help of a new generation of gamma-ray telescopes such as e-ASTROGAM, GECAM, and SVOM as well as future gamma-ray telescopes with a high angular resolution,

.
Fully-light vector tetraquark states with explicit P-wave via QCD sum rules*
Authors: Xin 辛 Qi 琦 , Wang 王 Zhi-Gang 志刚
Published: December 2023

In this study, we apply the QCD sum rules to investigate the vector fully-light tetraquark states with an explicit P-wave between the diquark and antidiquark pairs. We observed that the

(or

) type current with fully-strange quarks couples potentially to a tetraquark state with a mass

, which supports assigning

as the diquark-antidiquark type tetraquark state with

. The

and

vector tetraquark states with the structure

(or

) are consistent with

and

, respectively, which lie in the region from

to

. The central values of the masses of the fully-strange vector tetraquark states with an explicit P-wave are approximately

(or

). Predictions for other fully-light vector tetraquark states with and without hidden-strange are also presented.
The Influence Of Climate And Weather On The Arabica And RobustaCoffee Development And Production In The Ermera District Of Timor-Leste
Authors: Gomes Lucio Marcal , Ali M.Saleh S. , Ala H. Ambo , Salman Darmawan
Published: December 2023

Referring to the research entitled the effect of climate change and weather of the development and production of arabica and robusta coffee in Ermera district, Timor Leste. Arabica coffeeis one of the prima donna commodities that play an important and strategic role in securing the economy for nearly two and seventy thousand farmer houses in Timor-Leste. The potential for Arabica coffee exports in Timor Leste is ranked thirty-ninth with a fairly highexport quality because of the taste that is favored by coffee drinkers in the world around 157 million people, but the trend of increasing national coffee production is only 1-2% per year. On the other hand, the effects of climate change and weather also threaten the achievement of the target of increasing production. This research is a review of the effect of climate change and weather on coffee production and adaptation strategies in Timor Leste. The main coffee producing areas, such as the Regencies of Ainaro, Aileu, Bobonaro, Ermera, Liquisa and Manufahi, are vulnerable to the effects of climate change and weather. Increased extreme climateevents such as drought due to El Nio resulted in a 10-15% decline in coffee production. On the other hand, the long rainy season due to La Nia reduces coffee production by 80-90%. The indirect effect of climate and weather changes is the increase in attacks of fruit borer, coffee powder and leaf rust disease (Hemelia vastatrix) which causes a decrease in production of around 40-50%. As a result of rising temperatures, coffee production centers are projected to move to areas with higher elevations. Various adaptation technologies have been produced, but the level of adaptation of coffee farmers is generally still low. This condition is exacerbated by the limited access of most farmers to climate information, markets, technology, farm credit, and information on climate risk management. To overcome these problems, policy makers, stakeholders, and farmers must accelerate adaptation efforts because climate change has occurred and will continueto take place.
Analysis of Comfort Level in Public Open Space Facilities at Anjungan Sungai Mata Allo Enrekang: Visitors’ Perspective
Authors: haq Izharul , Radja Abdul Mufti , Syam Syahriana
Published: December 2023

This study aims to conduct an in-depth analysis of the level of comfort in public open space facilities at Anjungan Sungai Mata Allo, Enrekang, based on visitors’ perceptions using a mixed-method approach, including the Likert scale method. Additionally, direct observation and structured interviews were employed to collect data on various facility aspects, such as the availability of seating, lighting, greenery, cleanliness, and recreational amenities. The data was analyzed both statistically and qualitatively to gain insights into visitors’ preferences and expectations. The results of the analysis revealed that visitors’ perceptions of the comfort level in public open space facilities at Anjungan Sungai Mata Allo Enrekang varied. Several factors significantly influencing comfort included the availability of adequate seating, sufficient lighting, the presence of refreshing green areas, and the cleanliness and quality of recreational amenities. The mixed-method approach allowed for a comprehensive understanding of visitors’ preferences and expectations regarding these facilities. This research provides valuable insights for local governments and area managers in improving and developing public open space facilities. By understanding visitors’ needs and preferences, local authorities can plan urban development more centered on the community, thereby enhancing the experiences of city residents at Anjungan Sungai Mata Allo. The findings from this study are expected to serve as a strategic foundation for creating a more user-friendly, comfortable, and high-quality public space for the community, ultimately boosting the attractiveness of Anjungan Sungai Mata Allo as an urban tourism destination.
Mangrove Management Model Towards Net Zero Emissions in Sinjai Regency, South Sulawesi Province.
Authors: Indrawati  , Budimawan  , Samsu Arif
Published: December 2023

Mangrove ecosystem plays a very vital role in mitigating climate change, through carbon CO2 absorption. Mangroves have high potential as carbon sequestration. Sinjai Regency is one of the pilot project locations for district/city involvement in the Regional Low Carbon Development Plan in South Sulawesi Province, so that the policy continues to be implemented in various regions. Sinjai Regency has a Mangrove Area which is the result of rehabilitation, but there are indications of changes in land cover that are used conventionally and not integrated, causing a reduction in the area of mangrove land cover. This study aims to analyze the behavior of the model using three policy scenarios with the concept of environmental sustainability in terms of the contribution of mangrove forest utilization to emission absorption. The method used to see changes in land use from year to year is the spatial analysis method, then the data is analyzed using a dynamic system. This research was conducted from January to June 2022 in Sinjai Regency, South Sulawesi Province. The results of the analysis reveal that there are several types of land use that have decreased in area and some have increased in area from year to year. The simulation results show that the proportion of emissions is inversely proportional to changes in mangrove area. The recommended policy is to maintain a minimum land area in the Mangrove Area which is a Protected and Conservation Area and carry out mangrove rehabilitation. The policy structure in the mangrove sector is divided into three parts, scenarios under baseline, fair and ambitious conditions. The mangrove sector in baseline conditions can achieve net zero emissions in 2041, while fair conditions are achieved in 2027 and ambitious conditions are achieved in 2024.
Mangrove Ecosystem Management Strategy In Biringkassi Mangrove Area Pangkep Regency
Authors: Haidir Muh , Ambeng  , Samawi Farid
Published: December 2023

The mangrove ecosystem has an important role in the balance of the coastal area and the living things that surround it. The magnitude of the role of the mangrove ecosystem as a multifunctional resource and its existence which is very vulnerable to pressure requires a mangrove ecosystem management by integrating all aspects so that the existence of the mangrove ecosystem can be managed and its sustainability can be increased. This study aims to assess the condition and potential of mangrove forests in the Biringkassi mangrove area and determine sustainable management strategies for mangrove ecosystems based on influencing factors. This study uses an ecological analysis of mangrove ecosystems and SWOT analysis to determine sustainable management strategies. The results showed that the identification of Biringkassi mangroves in the three sample areas found 3 families of 3 species, Rhizopora mucronata, Sonneratia alba, And Avicennia alba. The type of Rhizopora mucronata had the highest density among all species found at 3 sample locations. The total density is 293 ind./hectare. Management strategies that are a priority in sustainable management of the Biringkassi mangrove area are: Developing a mangrove data bank through cooperation with the government, communities, and NGOs, strengthening institutional coordination that is more measurable and structured in the context of ecological sustainability, through conservation the establishment and arrangement of the Biringkassi mangrove management area, developing community-based management such as nursery and ecotourism management, improving the quality of human resources and maximizing the role of the community local communities in maintaining mangroves. The condition of the density of the Biringkassi mangrove ecosystem is categorized as less dense.
Biostratigraphy of calcareous nannofossils and their distribution in Tonasa Formation, Mallasoro area Jeneponto, South Sulawesi
Authors: Farida M , Jaya A , Ahmad A , Salsabilah N , Sato T
Published: December 2023

The age studies of the Tonasa Formation have been carried out from various relative ages, including using large foraminifera, small foraminifera, and nannofossil. Field and laboratory data were collected to observe the age and distribution of nannofossils in the study area. The results of observations from nannofossils in the Mallasoro section of the Jeneponto area are as many as 20 species were identified and examined in three markers ofSphenolithus pseudoradians(NP.22-NP.24), and the Last Occurrence ofDictyococcites scrippsae(NP.25-NN. 1). The age zonation of Tonasa Formation in this area is determined from the three datums is the Late Oligocene to Early Miocene (NP. 21 – NN.1) or correlated to CP.16c – CP.19a. The nannofossil abundances are distributed from bottom to top of the section is common to a few species, they areCyclicargolithus floridanus, Sphenolithus moriformis, andSphenolithus predistentus, respectively. Then followed byZygrhabilithus bijugatus, Discoaster deflandrei,Dictyococcites scrippsae,and Coccolithus pelagicusin rare to present distributions and the others are present to single.
Coal Quality Effect Analysis on Clinker Deformation in The Binungan Area, Berau Regency, East Kalimantan Province, Indonesia
Authors: Asmoro Yoki Dwi , Ma’waleda Musri , Widodo Sri
Published: December 2023

Unidentified Clinker causes a loss of reserve in mine activity. Clinker is created by in situ coal heating and has certain quality characteristics. This research investigated the effect of coal quality on clinker deformation. This research is located in the Latih Formation, Binungan Area, Berau Regency, East Kalimantan Province, Indonesia. Coal quality samples were derived from 77 drillholes, consisting of 10 seams with a thickness > 2.25 m and distributed laterally and vertically. Coal quality parameters consist of Inherent Moisture (IM), Ash Content (AC), Volatile Matter (VM), and Fixed Carbon (FC). The coal quality sample is classified into the clinker seam group and the non-clinker seam group. Each quality parameter is compared with seam thickness in a scatter graph. The result of this study is that coal that has the potential to deform into clinker has a value of IM < 14.49 %, VM > 39.8%, and FC > 42.08 %, but AC is 3.63% relatively stable, or there is no correlation to clinker deformation. Among these four quality parameters, moisture significantly differs between seam clinker and non-clinker. This study concludes that the lower layer of coal or older seam in the Binungan area has a higher potential to be clinker, which is caused by increased FC and VM values and a decrease in IM value.
Uniaxial Compressive Strength (UCS) Correlation Analysis On Ground Vibration in Blasting Activities
Authors: Apriansyah Rusadi , Purwanto  , Ramli Muhammad
Published: December 2023

Pit C2 is one of the active mining area at Sambarata Mine Operation Site which is included in block B1 whose mining sequence are increasingly leading to community and implementing blasting activities in mining operations, so that the ground vibrations are very important in the pit blasting activities. So far, the scale distance method of the signature hole combination used to analyze ground vibrations from blasting activities is considered to be quite good in some interburdens which is indicated by a deviation value of less than 10%. However, in some sandstone and mudstone rock types with relatively high uniaxial compressive strength values (26.92 – 33.87 MPa) showed abnormalities/deviation between the analysis method and the actual ground vibration (more than 10%) compared to other areas (11.17 to 14.67 MPa). After performing a regression analysis comparing the UCS values and the variance of the predicted results, it was found that there was a positive correlation between the UCS values and the variance of the blasting vibration analysis using the equation y = 27,142 x 19,876 with value of R = 0.725. So that the UCS value in the rock needs to be considered in determining vibration and blasting design.
Minimum legal size of commercially important groupers in the Coral Triangle Sulawesi Sea, Indonesia
Authors: Achmad D S , Nurdin M S , Jompa J , Taslim I , Sari Novita
Published: December 2023

Major challenges facing grouper fisheries in Kwandang Bay within the Coral Triangle include declines in potential spawners and as well as in the abundance of juvenile fish. One measure that can be taken to maintain valuable fisheries stocks such as groupers is to regulate the minimum legal size (MLS). The aim of this research was to identify and analyse the mean size at first maturity (Lm50) as a basis for setting an MLS for three grouper species of commercial importance. A total of 525 grouper specimens (307 Variola albimarginata, 90 Variola louti, and 128 Plectropomus leopardus) were collected from January to October 2022 from grouper traders, traditional markets, and the Kwandang Fishing Port. The Lm50 for each species was calculated using the Spearman-Karber formula. The Kwandang Bay catch was dominated by immature juvenile fish and the size class contributing the most individuals was below the Lm50 for all three grouper species. The MLS should be at least 32 cm for V. albimarginata, 33 cm for V. louti and 35 cm for P. leopardus in order to enable sufficient fish to spawn at least once, increase the number of spawners, and thereby maintain stock abundance.
The Performance of Anidolic Light Pipe Daylighting System in Office Building (Case Study : Bosowa Tower Makassar)
Authors: Utari Puspita , Hamzah Baharuddin , Jamala Nurul
Published: December 2023

Producing available daylight in buildings is an important issue for reasons of energy efficiency. To make an office space that is comfortable for employees, the concept of daylighting quality must be considered. This research aims to examine intensity of natural lighting in the workspace of Bosowa Tower Makassar, and apply Anidolic Light Pipe (ALP) daylighting system in reducing the illumination value in the building perimeter area and increasing the illumination value in the deeper area. The research used quantitative methods, collecting information about measurements of the workspace’s existing condition and evaluating ALP performance on a physical model. The building’s south and north sides indicated high illumination values, especially under clear sky condition. On the other hand, the deeper part of the building receives little natural light and is therefore rather dark. According to ALP performance tests with physical scale model simulation in an overcast sky condition, it can be concluded that this daylighting system can reduce the illumination value by 15,01% at a distance of 0,5 m from the window due to its shading external, and was able to increase the illumination value by 394,92% at a distance of 11,5 m from the window.
Analyzing Total Suspended Particulate at AP Pettarani Street in Makassar City
Authors: Malik S P H , Zakaria R , Harusi N M R
Published: December 2023

AP Pettarani Street is one of the main roads that is the center of activity in urban areas in Makassar City. The area on this road segment is almost entirely commercial and office area. This causes high motor vehicle traffic activity and frequent traffic jams. This activity can lead to decreased air quality as well as human health problems. One of the air pollutants is Total Suspended Particulate (TSP). This study was conducted to determine the concentration of TSP in ambient air and complaints of health problems felt by the people around AP Pettarani Street. There are six street points as TSP sampling sites and questionnaires. Measurements were carried out using the HVAS (High Volume Air Sampler) for TSP concentration and Google Form to distribute questionnaires to the community around the AP Pettarani Street Section. The results of the study showed that the concentration of TSP in the AP Pettarani Street of Makassar City ranged between 183.93 g/Nm3 - 301.64 g/Nm3. Furthermore, the health complaints perceived by the community around the AP Pettarani Street are still in a low scale – very low, but it is still recommended that the public continue to wear masks while outdoors to reduce the risk of health disturbances due to particulate dust.
Sustainability of Cocoa Farming from the Perspective of Farmers in Luwu District, South Sulawesi Province
Authors: Suardi Dian , Mahyudin  , Arsal Ariady , Munir Abdul Razak , Abdullah Agustina , Heliawaty
Published: December 2023

Low productivity can have an impact on farmers’ income and welfare and can trigger a decline in farmers’ interest in cocoa farming. BPS data shows that one of the cocoa production centres in South Sulawesi is experiencing a decline, namely Luwu Regency. Low productivity is considered the root cause of sustainability issues related to cocoa farming. This study aims to assess the sustainability of cocoa farming from the perspective of farmers in Luwu Regency. The research method used is descriptive with qualitative and quantitative approaches and uses SEM analysis with SmartPLS 3.0 software. The results showed that Economic Aspects (X1) had a positive and significant effect on the Sustainability of Cocoa Farming (Y), with a coefficient = 0.285, and P-Values = 0.018 < 0.05 while Social Aspects (X2) had a positive and significant effect on the Sustainability of Cocoa Farming (Y), with a coefficient value = 0.268, and P-Values = 0.018 < 0.05 and Environmental Aspects (X1) had a positive and significant effect on the Sustainability of Cocoa Farming (Y). 0.05 and Environmental Aspects (X3) have a positive and significant effect on the Sustainability of Cocoa Farming (Y), with a coefficient value = 0.270, and P-Values = 0.012 < 0.05.
Home Development in Relation to Spatial Functions Infisherman’s House
Authors: Asmal Idawarni , Syarif Edward , Amin Samsuddin , yahya M. , Asmal Sapta , Rivai Fridawaty , Latief Rudi , Ridwan
Published: December 2023

The stilt house model is a very suitable form to be developed in coastal areas known to experience frequent flooding. In addition, the model is very flexible to create because it saves land and construction costs. In developing space that takes up the area under the house (underneath), the homeowners are different in their implementation but adapt to various things such as the economy, family needs, and space availability. This paper aims to determine the form of changes in the function of space due to the development of family needs related to the material used. Research using phenomenology methodology. The data collection techniques were through in-depth observation, interviewing the community, and distributing questionnaires. Data analysis techniques using descriptive and correlation. Correlation analysis aims to see the relationship between related variables, namely the function of the development space with the material used and the part being developed. After that, a discussion was held to see or relate it to previous research regarding the suitability or incompatibility with the research results. As a result, homeowners generally develop the house by closing the pit, starting from the middle to the back. Generally, the function of the additional space is for service activities. Generally, they also use brick materials, and from the correlation, there is a significant relationship between work, income, and development room. The conclusion is that the development of the kolong space is influenced by the action of residential space requirements due to physical growth and the development of the number of family members and is supported by the economic development of the homeowner.
The strategy of handling the settlements for Under-resourced neighbourhood/area fishermen’s of Tallo Village
Authors: Maknun Agus A.P , Asmal Idawarni , Yahya M.
Published: December 2023

Tallo Village, Agampacayya area is one of the Under-resourced neighbourhood/area areas in Makassar City, South Sulawesi Province. The District Government categorizes the area as a Under-resourced neighbourhood/area area following regional regulations from 2015 to 2020. Over time, the area has increased because Tallo Village is located in a strategic economic area, the Center for Trade, Trade and Services Economy, Makassar City, South Sulawesi. Physical development took place in this area without any planning process. This impacts the deviation of the use of space, resulting in the inadequate arrangement of buildings in this area. However, the response from stakeholders (government, community and private sector) has been slow. It will have a massive environmental degradation impact on the coastal area of Agampacayya, Tallo Vilage. This study aimed to formulate a strategy for developing Under-resourced neighbourhood/area settlements in Tallo Vilage, Kampung Nelayan. This descriptive research used two analysis methods: quantitatively to answer the first problem and qualitatively to answer the second and third problems. The results showed that the settlement of Kampung Nelayan, Tallo Village was included in the village typology with a medium to high category of Under-resourced neighbourhood/areas. The SWOT analysis results show that handling Under-resourced neighbourhood/area settlements in Kampung Nelayan Tallo Village can be done through strategic combinations of strengths and opportunities to overcome existing weaknesses and threats. The results of the calculation of the strategy formulation show that handling the treatment of Kampung Nelayan Under-resourced neighbourhood/areas prioritizes strategies from a combination of strengths (S) - Opportunities (O) for the development of Under-resourced neighbourhood/area settlements in Kampung Nalayan Tallo Village.
Water Chemical Analysis of Surface Water Runoff from Iron Ore Mine Void at Tanjung – Bone, South Sulawesi.
Authors: Nurhikmah  , Ramli M , Sufriadin  , Saputra A
Published: December 2023

The main problem in open-pit mining activities is the remaining mine openings as voids after mining activities end. The interaction between rock, water and air can cause dissolved rock chemical elements to cause polluted water. A study of this phenomenon was carried out in a void in the Tanjung area. An abandoned iron ore mine left a void with a depth of 13 meters. Furthermore, around the void existed two stockpiles of mined ore. Therefore, the void and the stockpiles may act as pollutant sources that can reduce surface water quality. In the rainy season, the water from the void flows out as a runoff downstream through a tributary. This study is intended to analyze the chemical concentration of runoff water from the void. Field observation was done to identify rock formation, and measured pH, turbidity, total dissolved solids (TDS), and electrical conductivity(EC) of water on site, and collected 10 water samples from the river and tributary. Field data was completed with laboratory chemical analysis for water major elements of K+, Na+, Ca2+, Mg2+, Cl−, SO4
2−, CO3
2− and HCO3. The results of the analysis of the TDS test with a minimum value of 4 mg/l and a maximum of 607 mg/l. turbidity value 0 to 21.4 NTU, pH value 2.9 to 8.2, EC value 165.6 ms/cm to 316 ms/cm. Plotting the concentration of the major elements into Trilinear Piper Diagram shows that water is as CaMgSO4 water type based on their major elements. Changes in water quality at voids, stockpiles and areas around the mine indicate that potential water pollution is generated from existing stockpiles.
Fish waste-derived biomaterial as a support of zero waste and Sustainable Development Goals (SDGs)
Authors: Fendi F , Abdullah B , Suryani S , Raya I , Tahir D
Published: December 2023

Fish is a source of animal protein consumed by people worldwide. Its use for health and abundant fish production makes some countries or regions have high consumption compared to other animal protein sources. This study aims to review the potential of fish as a biomaterial to support zero waste and achieve the SDGs. This study reviews journals originating from Science Direct in narrative reviews of skin, scale, and bone waste from fish as biomaterials and the connection between zero waste efforts and SDGs. This study found that fish waste can be recycled into collagen, gelatin, hydroxyapatite, and calcium phosphate as biomaterials for bone tissue engineering, drug delivery, health, cosmetic, food, and pharmaceutical industries. It supports zero waste efforts and the achievement of SDGs in good health and well-being, responsible production and consumption, and decent work and economic growth.