bluuebunny/crossref_metadata_2025 huggingface dataset:
Spectral invariance of quasi-Banach algebras of matrices and pseudodifferential operators
Authors: Gröchenig Karlheinz , Pfeuffer Christine , Toft Joachim
Published: January 2024

We extend the stability and spectral invariance of convolution-dominated matrices to
the case of quasi-Banach algebras

p
<
1

{p<1}

. As an application, we
construct a spectrally invariant quasi-Banach algebra of
pseudodifferential operators with non-smooth symbols that generalize Sjöstrand’s results.
On the modular isomorphism problem for groups of nilpotency class 2 with cyclic center
Authors: García-Lucas Diego , Margolis Leo
Published: January 2024

We show that the modular isomorphism problem has a positive answer for groups of nilpotency class 2 with cyclic center, i.e., that for such p-groups G and H an isomorphism between the group algebras FG and FH implies an isomorphism of the groups G and H for F the field of p elements. For groups of odd order this implication is also proven for F being any field of characteristic p. For groups of even order we need either to make an additional assumption on the groups or on the field.
Regularity of fractional heat semigroups associated with Schrödinger operators on Heisenberg groups
Authors: Sun Chuanhong , Li Pengtao , Lou Zengjian
Published: January 2024

Let

L
=

-

Δ

ℍ
n

+
V

{L=-{\Delta}_{\mathbb{H}^{n}}+V}

be a Schrödinger operator on Heisenberg groups

ℍ
n

{\mathbb{H}^{n}}

, where

Δ

ℍ
n

{{\Delta}_{\mathbb{H}^{n}}}

is the sub-Laplacian, the nonnegative potential V belongs to the reverse Hölder class

B

𝒬
/
2

{B_{\mathcal{Q}/2}}

. Here

𝒬

{\mathcal{Q}}

is the homogeneous dimension of

ℍ
n

{\mathbb{H}^{n}}

. In this article, we introduce the fractional heat semigroups

{

e

-

t
⁢

L
α

}

t
>
0

{\{e^{-tL^{\alpha}}\}_{t>0}}

,

α
>
0

{\alpha>0}

, associated with L. By the fundamental solution of the heat equation, we estimate the gradient and the time-fractional derivatives of the fractional heat kernel

K

α
,
t

L

⁢

(
⋅
,
⋅
)

{K_{\alpha,t}^{L}(\,\cdot\,,\cdot\,)}

, respectively. As an application, we characterize the space

BMO
L
γ

⁢

(

ℍ
n

)

{\mathrm{BMO}_{L}^{\gamma}(\mathbb{H}^{n})}

via

{

e

-

t
⁢

L
α

}

t
>
0

{\{e^{-tL^{\alpha}}\}_{t>0}}

.
Sharp Sobolev and Adams–Trudinger–Moser embeddings on weighted Sobolev spaces and their applications
Authors: do Ó João Marcos , Lu Guozhen , Ponciano Raoní
Published: January 2024

We derive sharp Sobolev embeddings on a class of Sobolev spaces with potential weights without assuming any boundary conditions. Moreover, we consider the Adams-type inequalities for the borderline Sobolev embedding into the exponential class with a sharp constant. As applications, we prove that the associated elliptic equations with nonlinearities in both forms of polynomial and exponential growths admit nontrivial solutions.
On the comparison of translation invariant convex differentiation bases
Authors: Japaridze Irakli
Published: January 2024

It is known that if B and

B
′

{B^{\prime}}

are translation invariant convex density differentiation bases and the maximal operators associated to them locally majorize each other, then B and

B
′

{B^{\prime}}

differentiate the integrals of the same class of non-negative functions. We show that under the same conditions it is not possible to assert more about similarity of the differential properties of B and

B
′

{B^{\prime}}

in view of their positive equivalence.
Multiplicity result for a (p(x),q(x))-Laplacian-like system with indefinite weights
Authors: Kefi Khaled , Nefzi Chaima
Published: January 2024

Under some suitable conditions,
we show that at least three weak solutions exist for a system of differential equations involving the

(

p
⁢

(
x
)

,

q
⁢

(
x
)

)

{(p(x),q(x))}

Laplacian-like with indefinite weights. The proof is related to the Bonanno–Marano critical theorem (Appl. Anal.
89 (2010), 1–10).
Centralizing identities involving generalized derivations in prime rings
Authors: De Filippis Vincenzo , Gupta Pallavee , Tiwari Shailesh Kumar , Prajapati Balchand
Published: January 2024

Let

ℛ

{\mathcal{R}}

be a prime ring of characteristic not equal to 2, let

𝒰

{\mathcal{U}}

be Utumi quotient ring of

ℛ

{\mathcal{R}}

and let

𝒞

{\mathcal{C}}

be the extended centroid of

ℛ

{\mathcal{R}}

. Let Δ be a generalized derivation on

ℛ

{\mathcal{R}}

, and let

δ
1

{\delta_{1}}

and

δ
2

{\delta_{2}}

be derivations on

ℛ

{\mathcal{R}}

. Let

p
⁢

(
v
)

{p(v)}

be a multilinear polynomial on

ℛ

{\mathcal{R}}

, which is non-central valued on

ℛ

{\mathcal{R}}

. If

δ
1

⁢

(

Δ
2

⁢

(

p
⁢

(
v
)

)

⁢
p
⁢

(
v
)

)

=

δ
2

⁢

(

Δ
⁢

(

p
⁢

(
v
)

2

)

)

{\delta_{1}(\Delta^{2}(p(v))p(v))=\delta_{2}(\Delta(p(v)^{2}))}

for all

v
∈

ℛ
n

{v\in\mathcal{R}^{n}}

, then we find the complete description of Δ,

δ
1

{\delta_{1}}

and

δ
2

{\delta_{2}}

.
Numerical radii of operator matrices in terms of certain complex combinations of operators
Authors: Conde Cristian , Kittaneh Fuad , Moradi Hamid Reza , Sababheh Mohammad
Published: January 2024

Operator matrices have played a significant role in the study of properties of the numerical radii of Hilbert space operators. This paper presents several new sharp upper bounds for the numerical radii of operator matrices in terms of certain complex combinations. The obtained results reveal many interesting properties of the numerical radius.
A note on maximal estimate for an oscillatory operator
Authors: Shen Jiawei , Pan Yali
Published: January 2024

We study the local maximal oscillatory integral operator

T

α
,
β

∗

⁢

(
f
)

⁢

(
x
)

=

sup

0
<
t
<
1

⁡

|

∫

ℝ
n

e

i
⁢

|

t
⁢
ξ

|

α

|

t
⁢
ξ

|

β

⁢
Ψ
⁢

(

|

t
⁢
ξ

|

)

⁢

f
^

⁢

(
ξ
)

⁢

e

2
⁢
π
⁢
i
⁢

〈
x
,
ξ
〉

⁢

𝑑
ξ

|

,

\displaystyle T_{\alpha,\beta}^{\ast}(f)(x)=\sup_{0<t<1}\Bigg{|}\int_{\mathbb{%
R}^{n}}\frac{e^{i|t\xi|^{\alpha}}}{|t\xi|^{\beta}}\Psi(|t\xi|)\widehat{f}(\xi)%
e^{2\pi i\langle x,\xi\rangle}\,d\xi\Bigg{|},

where

α
∈

(
0
,
1
)

{\alpha\in(0,1)}

,

β
>
0

{\beta>0}

, and Ψ is a cutoff function that vanishes in a neighborhood of the origin. First, in the case

0
<
p
<
1

{0

1

{p>1}

, which is an improvement of the recent result by Kenig and Staubach. At the critical case

p
=
1

{p=1}

and

β
=

n
⁢
α

2

{\beta=\frac{n\alpha}{2}}

, we show

T

α
,
β

∗

:

B
q

⁢

(

ℝ
n

)

→

L

1
,
∞

⁢

(

ℝ
n

)

{T_{\alpha,\beta}^{\ast}:B_{q}({\mathbb{R}^{n}})\rightarrow L^{1,\infty}({%
\mathbb{R}^{n}})}

, where

B
q

⁢

(

ℝ
n

)

{B_{q}({\mathbb{R}^{n}})}

is the block space introduced by Lu, Taibleson and Weiss in order to study the almost every convergence of the Bochner–Riesz means at the critical index. As a further application, we obtain the convergence speed of a combination to the fractional Schrödinger operators

{

e

i
⁢
t
⁢
k
⁢

|
△
|

α

}

{\{e^{itk|\triangle|^{\alpha}}\}}

.
On statistical convergence of order α in partial metric spaces
Authors: Bayram Erdal , Bektaş Çiğdem A. , Altın Yavuz
Published: January 2024

The present study introduces the notions of statistical
convergence of order α and strong p-Cesàro summability of order
α in partial metric spaces. Also, we examine the inclusion relations
between these concepts. In addition, we introduce the notion of λ-statistical convergence of order α in partial metric spaces while
providing relations linked to these sequence spaces.
Almost measurable functions on probability spaces
Authors: Kharazishvili Alexander
Published: January 2024

The notion of (real-valued) almost
measurable functions on probability spaces is introduced and some of their properties
are considered. It is shown that any almost measurable function may be treated as
a quasi-random variable in the sense of [A. Kharazishvili,
On some version of random variables,
Trans. A. Razmadze Math. Inst. 177 2023, 1, 143–146].
An update on liver surgery – a new terminology and modern techniques
Authors: Tripke Verena , Sommer Nils
Published: January 2024

Liver surgery is the cornerstone of the curative treatment of malignant liver tumors. However, the liver anatomy is very complex, and liver surgery is still associated with relevant morbidity despite many technical advances. The Brisbane nomenclature is used worldwide to classify liver resection. However, this nomenclature has several limitations as multiple terms are used for the same type of resection. Non-anatomical resections, multiple resections, and combined bilio-vascular resections were not mentioned. Therefore, new terminologies have been proposed for the precise and simple classification of liver resection. Furthermore, in recent years, many technical innovations have been introduced in liver surgery, such as 3D imaging systems and indocyanine green fluorescence, for better preoperative and intraoperative identification of tumor localization and critical vascular structures. Minimally invasive techniques are used more frequently in liver surgery. Potential benefits include less intraoperative blood loss, less pain, and a shorter hospital stay. The implementation of robotic systems also has an impact on liver surgery, and the number of cases reported in the literature is constantly increasing. The potential benefits of robotic liver resection over laparoscopic liver resection will be the subject of future studies.
Price Hedonics of Beers: Effects of Alcohol Content, Quality Rating, and Production Country
Authors: Thrane Christer , Lien Gudbrand , Mehmetoglu Mehmet , Størdal Ståle
Published: January 2024

We examine the association between beer prices and the inherent characteristics of beers within the traditional price hedonic framework. Using a large-scale Norwegian data set with more than 9000 individual beer products from several production countries, we find that alcohol content has a strong, positive, and significant effect on the retail price of beer. In contrast, the effect of expert quality rating on beer price appears to be of only small to moderate importance. We also find significant and substantially important price differences between production countries. Finally, there is effect heterogeneity (i.e. interaction effects) for both alcohol content and quality rating with respect to production country. For example, the association between alcohol content and price is larger in Norway and Germany than in most of the other production countries in the data.
Differential synthetic aperture radar (SAR) interferometry for detection land subsidence in Derna City, Libya
Authors: Ibrahim Heba Basyouni , Salah Mahmoud , Zarzoura Fawzi , El-Mewafi Mahmoud
Published: January 2024

The country of Libya, situated on the Mediterranean fault zone, has a distinctive geodynamic regime due to the interplay between the Eurasian and African plates, which governs its tectonic evolution. In addition to its seismological significance, Libya is characterized by numerous subsidence and slope instabilities in regions with steep terrain. These geological phenomena have significant consequences for the built environment, as they pose an immediate danger to entire towns and essential infrastructure. Furthermore, infrequent weather phenomena, such as intense precipitation and thunderstorms, when coupled with the geological characteristics of some regions and the presence of seismically active terrain, have the potential to trigger landslide and land subsidence, resulting in significant harm to vital infrastructure. The current study utilizes the DInSAR technology to identify distinct subsidence occurrences that were induced by intense precipitation in coastal regions of Libya, specifically in Derna. These areas experienced significant flooding resulting in collapses during September 2023. A total of six pairs of co-event Interferometric Synthetic Aperture Radar (SAR) were utilized to generate displacement maps in the vertical, north-east, and north-west directions for the purpose of analysing the deformations. The aforementioned activities are conducted via Sentinel-1A images, which is freely accessible through the Copernicus program. Additionally, flood-prone zones were defined using Sentinel-1 GRD imagery. The Interferometric processing revealed multiple areas of subsidence. Subsidence rates of up to −14 cm were found in Derna city’s urban cores after flood. The findings suggest that subsidence may have an effect on the flood-proneness of the region of Derna City as Ground subsidence also occurred in the period immediately before the earthquake, at a rate of −14 cm.
Analytical solution of Stefan-type problems
Authors: Kassabek Samat A. , Nauryz Targyn A. , Toleukhanov Amankeldy
Published: January 2024

In this paper, free surface problems of Stefan type for the parabolic heat equation are considered. The analytical solutions of the problems are based on the method of heat polynomials and integral error function in the form of series. Convergence of the series solution is considered and proved. Both one-and two-phase Stefan-type problems are investigated. Numerical results for one-phase inverse Stefan problem are presented and discussed.
EDNRB inhibits the growth and migration of prostate cancer cells by activating the cGMP-PKG pathway
Authors: Li Xun , Liu Bide , Wang Shuheng , Dong Qiang , Li Jiuzhi
Published: January 2024

Prostate cancer (PCa) represents a substantial global health concern and a prominent contributor to male cancer-related mortality. The aim of this study is to explore the role of B-type endothelin receptor (EDNRB) in PCa and evaluate its therapeutic potential. The investigation employed predictive methodologies encompassing data acquisition from the GEO and TCGA databases, gene screening, enrichment analysis, in vitro experiments involving PCR, Western blotting, wound healing, and Transwell assays, as well as animal experiments. Analysis revealed a significant downregulation of EDNRB expression in PCa cells. Overexpression of EDNRB demonstrated inhibitory effects on tumor cell growth, migration, and invasion, likely mediated through activation of the cGMP-Protein Kinase G pathway. In vivo experiments further confirmed the tumor-suppressive properties of EDNRB overexpression. These findings underscore the prospect of EDNRB as a therapeutic target for PCa, offering novel avenues for PCa treatment strategies.
Enhancing second harmonic generation by Q-boosting lossless cavities beyond the time bandwidth limit
Authors: Franceschini Paolo , Tognazzi Andrea , Chernyak Anna M. , Musorin Alexander I. , Cino Alfonso C. , Fedyanin Andrey A. , De Angelis Costantino
Published: January 2024

Nanostructures proved to be versatile platforms to control the electromagnetic field at subwavelength scale. Indeed, high-quality-factors nanocavities have been used to boost and control nonlinear frequency generation by increasing the light–matter interaction. However, nonlinear processes are triggered by high-intensities, which are provided by ultrashort laser pulses with large bandwidth, which cannot be fully exploited in such devices. Time-varying optical systems allow one to overcome the time-bandwidth limit by modulating the cavity external coupling. Here we present a general treatment, based on coupled mode theory, to describe second harmonic generation in a doubly resonant cavity for which the quality-factor at the fundamental frequency is modulated in time. We identify the initial quality factor maximizing second harmonic efficiency when performing Q-boosting and we predict a theoretical energy conversion efficiency close to unity. Our results have direct impact on the design of next generation time-dependent metasurfaces to boost nonlinear frequency conversion of ultrashort laser pulses.
Crystal structure of 3,4-bis[2-(hydroxymethyl)-pyrrolidin-1-yl] cyclobut-3-ene-1,2-dione hydrate, C14H22N2O5
Authors: Wang Yiyu , Dang Xiaolin , Du Mo , Zhao Meimei , Tang Wenqiang
Published: January 2024

C14H22N2O5, orthorhombic, P212121 (no. 19), a = 8.0704(12) Å, b = 9.0136(13) Å, c = 20.596(3) Å, V = 1498.2(4) Å3, Z = 4, R

gt
(F) = 0.0429, wR

ref
(F
2) = 0.1112, T = 296 K.
The crystal structure of 6-(benzofuran-2-yl)-2-oxo-4,5-diphenyl-3,4-dihydro-2H-pyran-3-carbonitrile, C26H17NO3
Authors: Liu Miao-Chang , Huang Xiao-Bo , Wu Deng-Ze
Published: January 2024

C26H17NO3, monoclinic, Cc (no. 9), a = 20.044(2) Å, b = 10.7294(9) Å, c = 9.4232(8) Å, β = 91.689(3)°, V = 2025.6(3) Å3, Z = 4, R

gt
(F) = 0.0360, wR

ref
(F
2) = 0.0814, T = 293(2) K.
Crystal structure of ethyl 5,6-dichloro-2-methyl-2,3-dihydro-1 H-benzo[d]imidazole-2-carboxylate, C11H12Cl2N2O2
Authors: Li Tao , Yao Zhen
Published: January 2024

C11H12Cl2N2O2, monoclinic, P21/c (no. 14), a = 19.937(2) Å, b = 5.7080(8) Å, c = 23.406(3) Å, β = 108.521(4)°, V = 2525.7(6) Å3, Z = 8, R

gt
(F) = 0.0483, wR

ref
(F
2) = 0.1171, T = 200 K.
Pedal Quadrant-Specific Strength and Conditioning Considerations for Endurance Cyclists
Authors: Worn Ryan L. , Talpey Scott W. , Edwards Toby
Published: January 2024

The performance-enhancing effects of strength training on cycling are well documented with findings from research, demonstrating resistance training with heavy loads conducted 2–3 times per week for at least 8 weeks can improve power output (maximal and submaximal), extend time to exhaustion, and reduce completion time for set distances, while not adding to the total body mass. Despite the evident benefits of strength training, there remains a lack of consensus regarding the most effective exercises to enhance endurance cycling. This uncertainty is evident when considering movement-specific exercises to enhance dynamic transfer to cycling. A range of lower-limb exercises involving hip, knee, and ankle flexion and extension seems to enhance cycling performance more so than static or single-joint exercises. These improvements may be attributed to enhanced coordination and improved pedaling technique. This study presents 5 strength training exercises designed to target cycling pedaling quadrants and replicate the unilateral opposing nature of cycling (simultaneous flexion and extension of the legs) to enhance transfer from weight room-based strength training to the bike. These exercises are presented in example programs alongside established “traditional” exercises that may be used to guide the development of strength training for cyclists.
Nutrient management of shallot (Allium cepa Aggregatum group) in Riau peatlands, a pot experiment
Authors: Sopha Gina Aliya , Aprianto Fahmi
Published: January 2024

Peatland degradation might affect peatland functions. Sustainable agriculture practice, i.e., nutrient management, is one of the efforts that could be made to delay the degradation. Therefore, this research aimed to identify the best nutrient management practice for shallot production in degraded peatlands. A split-plot experimental design was performed in a greenhouse environment, with cultivars (Sembrani and Trisula) as the main plot and eleven combinations of NPK fertilizer as the subplot. All treatments received 4.4 t ha-1 dolomite to increase the soil pH. Results showed that Sembrani produced a higher bulb yield than Trisula. Trisula was sensitive to acidic soils and failed to yield a high bulb. The NPK recommended dose for Sembrani was 150 kg N ha-1, 100 kg P2O5 ha-1, and 100 kg K2O ha-1, producing 57.50 g plant-1 equal to 14.4 t ha-1 or 53% higher than the control (without NPK). Meanwhile, growing Trisula was not recommended for peatlands.
Imperata vegetation succession and carbon stocks on degraded land of beach forest in Marsegu Island, Maluku, Indonesia
Authors: Irwanto Irwanto , Paembonan Samuel Arung , Ngakan Putu Oka , Maulany Risma Illa , Sahupala Andjela , Yatim Hertasning
Published: January 2024

Many sandy beach forests on small islands were cut down by people for farming to provide for their food needs. Land degraded due to over-exploitation is overgrown by Imperata cylindrica, which often causes fires in the dry season. This study aims to determine the species that occur in the secondary succession of Imperata grassland vegetation to assess soil fertility and differences in carbon stocks in various types of vegetation cover on the beach of Marsegu raised coral island. The measurement and calculation of carbon stocks used the Indonesian National Standard 7724:2011 with slight modifications in certain parts. The non-destructive method for calculating the above-ground and below-ground biomass used an allometric and the destructive method was carried out for understory and litter while the carbon content of the soil was taken compositely from several plots and layers and then analyzed in the laboratory. The results showed that the species that can grow and coexist with Imperata cylindrica is Timonius timon. In the final stage of the loss of Imperata cylindrica, the beach forest area was dominated by Terminalia catappa, Sterculia ceramica, and Cassia fistula. The soil's nutrient content of total N, P2O5 (available P) and cation exchange capacity (CEC) is low, with a very high sand texture percentage of 91-93%, which affects soil fertility. A comparison of total carbon stocks between differences in vegetation cover is the Imperata grassland area of 129.955 t/ha, the rehabilitation area is 82.920 t/ha, and the Terminalia vegetation is area 137.977 t/ha.
Geophysical, geotechnical, and vegetation characteristics in landslide areas in Pujon and Ngantang, Malang Regency, East Java
Authors: Zairina Anisa , Soemarno Soemarno , Rachmansyah Arief , Yanuwiadi Bagyo
Published: January 2024

One of the efforts to manage the risk of ground movement is to identify landslide-prone area characteristics. This study aimed to investigate the geophysical, geotechnical, and vegetation characteristics of landslide and non-landslide areas. This study adopted the resistivity geoelectric method to identify the type and structure of subsurface materials in landslide and non-landslide regions in Pujon and Ngantang, Malang Regency. Measurements in this study were done in four locations. Each geoelectric measurement path at each location was determined to be 100 m long. The electrodes were spaced apart by 10 m for measurements between the current electrode and the potential electrode. The dipole-dipole configuration of the geoelectric survey trajectory is determined based on the former landslide event to predict underground material. In addition, an investigation of geological, geotechnical, and vegetation characteristics was carried out. The results showed that the geophysical, soil, and vegetation characteristics of the landslide and non-landslide slopes were similar. The geophysical characteristics of the soil in all study locations indicate the presence of a slipping surface, which makes the land prone to landslides. The slipping plane was formed due to differences in the types of rocks between the surface and deep layers. The existence of vegetation has an important role in landslide management. Non-landslide areas tended to have denser tree vegetation and a higher number of shrub species.
Lithogeochemical characteristics and potential hyperaccumulator identification as phytomining agent at the Ratatotok gold mine, Indonesia
Authors: Aminatun Tien , Idrus Arifudin , Simbolon Doly , Rakhmawati Anna , Atun Sri
Published: January 2024

In the future, phytomining will be an environmentally friendly alternative mining technology. Therefore, the exploration of vegetation types having the potential as hyperaccumulators in gold phytomining needs to be carried out. This study aimed to (1) investigate the effect of rock/soil mineralogy characteristics and Au content on the diversity of vegetation types at gold mine sites, and (2) determine the type of potential hyperaccumulator vegetation as a phytomining agent based on the Biological Concentration Factor (BCF). This study was conducted at the Ratatotok gold mine in North Sulawesi Province, Indonesia. The sampling locations consisted of 3 sites, i.e., Bulex, Yance, and Leon, and each site consisted of 5 sampling plots. Soil samples were taken from each sampling plot and then tested for gold content using the ICP-MS method and mineral content using the XRD method. Mineralized bedrock samples were also taken for mineralogical analysis through petrography. Data analysis of soil geochemistry was carried out descriptively. Quantitative descriptive analysis was also carried out to determine the dominant type of vegetation, which was potential for hyperaccumulators at the mine site. The results showed that gold content in the soil affected the diversity of vegetation, which was possibly due to gold stress, which affected plant growth. Based on the BCF value, three local plant species having potential as gold hyperaccumulators with moderate bioaccumulation ability (BCF>0.1-1) were found, namely Pteris vittata, Syzygium aromaticum, and Swietenia mahagoni. However, the use of these plants as phytomining agents requires further research.
Effect of lime application on phosphorus adsorption and desorption in post-active acid sulfate soil, Thailand
Authors: Sukyankij Saychol , Sukyankij Sopida , Khongsud Chalinee , Panich-pat Thanawan
Published: January 2024

The application of lime is the general method of improving acid sulfate soils. However, if a lot of lime is applied, it can reduce the bioavailability of nutrients in the soil, especially phosphorus. The objective of this study was to investigate the effects of liming at different rates on the availability, adsorption, and desorption of phosphorus in two post-active acid sulfate soils (Ay and Se). The experiment was performed in the laboratory. The experiment was laid out in a completely randomized design (CRD) with four treatments and three replicates, i.e., the application of lime at a rate of 0 (control), 0.5, 1.0, and 2.0 times the lime requirement (LR). The lime requirements of the soils in the Ay and Se were 5,690 and 12,250 kg CaCO3/ha, respectively. The finding revealed that increasing the amount of lime could increase soil pH, available phosphorus, and the phosphorus activation coefficient. Application of lime at a dosage of 1.0-2.0 LR resulted in the highest phosphorus adsorption maximum (Qm) (380 mg/kg), while 0.5 LR resulted in the lowest Qm (353 mg/kg) in Se soil only. As lime dosage increased, phosphorus desorption maximum (Dm) and phosphorus desorption ratio (Dr) increased, with 2.0 LR yielding the highest values (124 mg/kg and 23.6 percent for Ay soil, and 77.3 mg/kg and 20.3 percent for Se soil, respectively). The results suggested that applying lime according to the lime requirement test, especially 2.0 LR, is the best option to promote the release of phosphorus in post-active acid sulfate soils.
Improvement of N, P, and K availability of post-brick mining soil to increase maize yield by applying different types of biochar
Authors: Widowati Widowati , Wilujeng Retno , Nurhidayati Nurhidayati , Indrayatie Eko Rini
Published: January 2024

The low fertility of post-brick mining soil may be improved by applying biochar to the soil because biochar is an excellent soil amendment, although its quality varies depending on the raw materials used. Therefore, soil fertility, nutrient availability, and crop yields are affected by the type and amount of biochar added to soils. This study examined the effect of types and dosages of biochar on nitrogen, phosphorus, and potassium availability of post-brick mining soil to increase maize yield. The treatment combinations of biochar dosages (0 t ha-1, 15 t ha-1, 30 t ha-1, and 45 t ha-1) and biochar types (coconut shell, wood, and rice husk biochars) were arranged in randomized block design with three replications. Each treatment plot measuring 4 m x 4.5 m was planted with maize seeds with a planting space of 80 cm x 25 cm. Urea (135 kg N ha-1), SP36 (36 kg P2O5 ha-1), and KCl (110 kg K2O ha-1) were applied as basal fertilizers. The results showed that at eight weeks after biochar application, the amount and type of biochar positively affected maize yield. The application of rice-husk biochar at 30 t ha-1 resulted in the highest maize yield. The application of each type of biochar at 45 t ha-1 yielded the highest increase in the availability of nitrogen, phosphorus, and potassium in the soil.
Ultisol optimization strategy: the use of Tithonia compost and rice husk biochar to improve nodulation and promote soybean (Glycine max (L.) Merril) growth
Authors: Lestari Ardiyaningsih Puji , Zulkarnain Zukkarnain , Eliyanti Eliyanti , Riduan Ahmad
Published: January 2024

This study aimed to investigate the optimization of Ultisol soil using biochar and compost to increase nodule formation and performance of soybeans. The trial was conducted at the Research and Teaching Farm, Faculty of Agriculture, University of Jambi, for six months from April through to October 2021. Three levels of compost (5 t ha-1, 10 t ha-1, and 15 t ha-1) were tested in combination with three levels of biochar (5 t ha-1, 10 t ha-1, and      15 t ha-1). A completely randomized design was employed with three replications. Each experimental unit consisted of 20 plants, and 25% of the population was taken as sample plants. Results indicated that the application of soil ameliorant in the form of Tithonia compost and biochar could increase soil pH and nutrient contents and reduce C/N ratio. Tithonia compost + biochar improved Ultisol productivity as indicated by increased nodule formation and soybean growth. The combination of Tithonia compost and biochar, each of 15 t ha-1, was the best combination for the optimization of Ultisol, which produced the highest biological nitrogen fixation rate and resulted in the best soybean growth.
Land conversion to cement factory and mining: Effect of environmental change to disaster and farmer livelihoods
Authors: Harifuddin Harifuddin , Haris Subhan , Anriani Haslinda B , Azuz Faidah , Apriningsih Apriningsih
Published: January 2024

Land conversion from agricultural to cement factory and mining areas has consequences for environmental change and degradation that cause disasters and sustainability farmer livelihood. This study aimed to analyze land conversion to a cement factory and mining as determinants of environmental change, environmental change as a determinant of environmental degradation, and the effect of environmental change and environmental degradation on the sustainability of farmer livelihoods. This research used a sequential explanatory design or quantitative rather than qualitative. The research sample totaled 183 respondents. Data collection used the quantitative stage using questionnaires and the qualitative stage using in-depth interviews, observation, and literature study. The results showed that land conversion to a cement factory and mining are causes of environmental change, followed by environmental degradation, such as factory smoke pollution, dust from karst mines, factory vehicle dust, and soil pollution due to coal piles. Environmental change is a cause of environmental degradation, such as crop failure, acute respiratory illness, land clearing, and flooding. The effect of environmental change and environmental degradation on the sustainability of farmer livelihoods is that almost all farmers sell their rice fields for the factory area, then buy ponds, do business, open stalls, and open photocopy businesses. No one returned to being a farmer. The conversion of agricultural land to a cement factory and mining caused a decrease in environmental functions, namely the disruption of the ecosystem chain, which caused flooding and acute respiratory disease and caused farmers to switch to non-agricultural livelihoods.
Economic value and environmental impact of Saddang River sand mining, Pinrang Regency, South Sulawesi, Indonesia
Authors: Arsyad Arsyad , Rukmana Didi , Salman Darmawan , Alimuddin Ilham , Arifin Muh. Aris , Jamaluddin Jamaluddin , Hamzah Hamzah , Nurdirman Eris , Ihsan Muh. , Bauna Ruslan , Reno Reno , Tinta Yulis
Published: January 2024

This research aimed to determine the social, economic, and environmental impact of Saddang River sand mining on local communities and the Pinrang district government. Primary data collection used field surveys to obtain supporting data on economic aspects consisting of production capacity, costs, selling price of sand at the miner level and market price at the consumer level, number of grains, and various other economic values such as indirect value and indirect use value. The primary data collection method uses a total sampling of 80 miners operating in the research area. Consumer data uses a field survey method with 8 hours of observation per day. Saddang River sand mining provides great socio-economic value and environmental impact, directly or indirectly. This significant socio-economic value and impact, if not accompanied by good management, can result in over-exploitation, which impacts the physical and ecological damage of the Saddang River. On the other hand, the high rate of sedimentation from upstream of the Saddang River results in shallowing, so sand mining activities help normalize the Saddang River. Therefore, to continue providing economic benefits and the Saddang River to avoid physical and ecological damage due to mining activities, sustainable management of Saddang River sand mining is needed.
“Get out of here you anti”
Authors: Pande Rukmini
Published: January 2024

Pleasure(s) of people of marginalized genders and sexualities are central to media fandom scholarship, making it suitable to analyze as an identitopia. Recently, the figure of the fandom antifan or anti, an individual deemed hostile to fan pleasure, particularly around shipping practices and fanwork production, has gained prominence in fandom discussions. The anti is seen to interrupt media fandom’s identitopia through policing and puritanism.

A troubling aspect of this formulation is the consistent identification of fans who are critical of fandom’s negotiation of race/ism, as antis themselves. They are then accused of supporting censorship in the name of social justice. This is a disruption of antifandom models as these fans do not claim a negative stance themselves. This article theorizes this disruption via the fandom killjoy, drawing from in-depth fan interviews and examining related racist incidents in fandom spaces.
Digital Pleasure and Danger
Authors: Maragh-Lloyd Raven
Published: January 2024

This roundtable discussion features two leading scholars of critical race and digital media, Drs. Brooklyne Gipson and Kishonna Gray. The impacts of pleasure and danger on social network sites and digital media certainly predate these technologies yet are heightened in unique ways by their affordances. Both Gipson and Gray discuss how they center Black feminism, queerness, and intersectionality in their approaches to digital media studies and the conundrum of harm, pleasure, and nuance online. They discuss themes such as storytelling, methods, and play to push the boundaries of the binary and chart a path forward that is neither afraid of nor essentialist about the role of technology in our lives.
Taxes and Government Payments and their Impact on Population Income
Authors:   Kharkiv National Automobile and Road University, Nepran Andrey , Postolna Natalya ,   Separate Structural Unit "Kharkiv Trade and Economics College" of the State Trade and Economics University
Published: January 2024

The article examines the influence of taxes and government expenditures on the incomes of the population. In the modern economy, personal consumption is the most important factor, which largely depends on economic growth and directions of structural restructuring of the national economy. Determining the role of taxes and government spending on the purchasing power of the population plays an important role in increasing income growth and the population's standard of living. It was established that the growth of state payments to the population became one of the factors of increasing disparities between the amount of solvent demand and the level of development of the national economy. The dynamics of state payments to the population significantly exceeded the capabilities of the real sector of the economy. Stimulating the purchasing power of the population and at the same time limiting accumulation, the tax redistribution of national income increased the demand in the market of consumer goods and services, which acted as one of the most important factors in exacerbating the contradictions between accumulation and savings
The Convergence of Economic Growth: Case Study of East Java
Authors: Diartho Herman Cahyo , Somaji Rafael Purtomo , Kharisma Gheghe Rizky
Published: January 2024

Economic growth is a parameter in achieving regional economic development, which describes an increase in the actual production capacity and the dynamics of the regional economy. This study aims to determine whether there is a yearly decrease in economic growth inequality (sigma convergence) or an acceleration of low economic growth to high economic growth (beta convergence) in East Java in 2016 – 2021. This study used secondary data. The analytical method used in this study is convergence and panel data regression analysis. The results showed that the dispersion of economic growth experienced a downward trend, indicating the occurrence of sigma convergence in East Java. Underdeveloped regions do not grow faster than developed regions, showing no absolute beta convergence in East Java. The HDI and Population Variables have not been able to accelerate convergence in East Java, indicating no conditional beta convergence in East Java.
Analysis of Bank Saving Growth Below IDR2 Billion in Indonesia
Authors: Kornitasari Yenny , Mastur Abi Rafdi , Saheruddin Herman
Published: January 2024

The COVID-19 pandemic, global economic shocks, and global geopolitical risks have resulted in the banking industry facing global uncertainty that affects both banks and customers. This uncertainty has grown significantly in recent years. This research examines the differences between the periods before and after the COVID-19 pandemic and the long-term and short-term effects of inflation, BI-7DRR, deposit rates, SBN yields, and the COVID-19 pandemic on DPK growth. The research utilizes the Difference Test and the Error Correction Model methodologies. The study reveals differences in DPK, BI-7DRR, deposit rates, and SBN yields before and during the COVID-19 pandemic. The findings indicate that inflation, BI-7DRR, deposit rates, and the COVID-19 pandemic have a long-term impact but do not exhibit a short-term impact. Meanwhile, SBN yield has no long-term or short-term effect on DPK growth. Inflation affects the growth of DPK in the long term because people see the direction of economic conditions. BI-7DRR has a long-term with DPK because banks require a time lag. The level of DPK does change in the long term because banks must adjust interest rates based on economic conditions. Increased savings in banks because people see the COVID-19 pandemic as a shock economy. Disclaimer: All views in this paper are the authors' and do not necessarily reflect the views of Indonesia Deposit Insurance Corporation (Lembaga Penjamin Simpanan).
Impact of Minimum Wage and Sectoral Growth on Inflation
Authors: Suparta I Made
Published: January 2024

Inflation is one of the macroeconomic problems faced by every country. Inflation reduces the purchasing power of money. Inflation occurs due to cost-push inflation, demand-pull inflation, and rising expectations. The main objectives of this study are to analyze the impact of the minimum wage on inflation, evaluate the effect of agricultural sector growth on inflation, examine the impact of industrial sector growth on inflation, and identify the impact of service sector growth on inflation. In order to attain these goals, an examination was conducted utilizing Eviews with panel data spanning from 2013 to 2022 across 38 regions in East Java. After conducting tests on different models, it has been determined that the REM model is the most optimal. Analyzing the results obtained through the REM model reveals that the impact of minimum wage on inflation is positive but not statistically significant. The growth of the agricultural sector has a positive and significant effect on inflation. The growth of the industrial sector has a positive and insignificant effect on inflation. Growth in the service sector has a positive and significant effect on inflation.
Toward Sustainable Tourism: Insights for Mactor Analysis In Ngebel Lake, Indonesia
Authors: Rahardjo Mugi , Gravitiani Evi , Sasanti Ika Alicia
Published: January 2024

Sustainable tourism development requires the synergy of actors' and actors' attitudes in responding to goals and opportunities for conflict to arise due to resistance between actors and goals. This study aims to identify stakeholder actors, identify the strengths and attitudes of actors towards sustainable tourism development goals and describe the pattern of linkage between actors with development goals in Ngebel Lake. This research uses a sequential mixed method that combines quantitative and qualitative approaches sequentially in all stages of the research process. Data collection methods using in-depth interviews with actors. Data analysis using MACTOR software to identify stakeholder actors' strengths, relationships, and alliance patterns. The results showed that Local Communities, Small and Medium enterprises, and the Services Office of Environment are the dominant actors in tourism development in the Ngebel Lake area. Meanwhile, The Department of Youth Sports and Tourism, the Village Government, the Tourism Awareness Group, and Visitors are relay actors. The finding of this study is that most stakeholders converge in support of achieving the strategic objectives, although some resist the purposes. It can be recommended to develop a pattern of collaboration between all stakeholders needed for the sustainable development of tourism potential in Ngebel Lake.
Macroeconomic, Institutional, and Energy Consumption on Economic Growth APEC Members
Authors: Sarjiyanto Sarjiyanto , Romadhoni Latifah
Published: January 2024

Economic growth is a shared goal pursued by every country across various regions worldwide, including the member nations within the APEC organization. However, APEC member countries still encounter several economic challenges to achieve optimal economic growth. First, macroeconomic issues such as regulatory barriers limit both FDI inflows and trade. Furthermore, unemployment remains an unresolved issue. Second, based on the World Bank's average estimates, most APEC countries exhibit low institutional quality. This is due to corruption, weak law enforcement, and lack of government transparency. Third, there is the issue of limited energy supply and increased carbon emissions due to non-renewable energy consumption. This research aims to determine the influence of macroeconomics, institutional quality, and renewable energy consumption on the economic growth of APEC member countries. The analysis method for this research is PVECM regression. The data used is panel data from 2005-2019. The research results show that the variables FDI, Trade, Labor, REC, and IQ have long and short-term influences on the economic growth of APEC countries. Suggestions that can be given are to improve the quality of APEC country institutions because, as seen from the average indicator estimates by the World Bank, Most APEC countries have low institutional quality. This improvement is needed to make policies more effective and efficient. Each country is also expected to increase the amount of renewable energy consumption.
Education and Energy Consumption: a Provincial Analysis in Indonesia
Authors: Susanto Nadira Aisha , Hartono Djoni , Misdawita Misdawita , Nuryadin Didi , Surayuda Ida Bagus Putu Cesario Putra , Saputri Novani Karina , Azzahrah Shofie
Published: January 2024

The global and national energy consumption continues to increase every year, leading to increased carbon emissions. Households are one of Indonesia's energy consumers, where household members' educational level is considered to influence energy consumption. Due to the limited studies in Indonesia regarding the relationship between education and energy consumption, this study aims to explain the relationship between education and energy consumption among provinces in Indonesia. This study is a quantitative study under the STIRPAT framework, using three estimation methods to examine the impact of education on energy consumption among provinces in Indonesia from 2010 to 2021, namely OLS, Fixed Effect, and Fixed Effect Discroll-Kraay. The research was conducted with three different data analyses: Indonesia as a whole, Java, and non-Java regions. The study found differences in estimation results between Java and non-Java regions, providing evidence that the level of education has different associations with per capita energy consumption in these two areas. It was also found that the estimation results for Indonesia align with those in non-Java regions. The study concludes that education has a significant positive association with energy consumption in Indonesia and specifically in non-Java regions, while the association between education and energy consumption in Java is negative and significant. The policy implications suggest that the government should continue efforts to improve the quality of education and promote more efficient energy consumption education in the Java region and implement complementary policies such as compulsory education programs for non-Java regions to reduce energy consumption in Indonesia.
Determination of the Effects of Heavy Metal Stress on Plant Development and Physiology in Feed Soybean (Glycine Max L.)
Authors: SAĞLAM KOÇAK Gönül , Gül Zeynep Dumlu
Published: January 2024

This study was carried out to determine the tolerance level of cadmium and lead applications at different concentrations on physiological and morphological parameters in soybean (Glycine max L.) The experiment was carried out in Atatürk University Plant Production Application and Research Center greenhouses. Yeşilsoy variety of feed soybean (Glycine max L.) was used as plant material. Plant growth (seedling height, stem diameter, fresh and dry weight, etc.), physiological properties (tissue proportional water content, tissue electrical conductivity) and biochemical parameters (chlorophyll amount, superoxide distumase (SOD), catalase (CAT), heavy metal applications) peroxidase (POD) enzyme activities, etc.) were investigated. All treatments had negative effects on all parameters compared to the control group. Growth retardation was experienced at the highest concentrations applied, but plant deaths were not observed. Although it is known that cadmium metal is more toxic than lead metal, the wet weight values of the plants to which the highest dose of both metals were applied were included in the same statistical group.
In Vitro Vitamin C Equivalent Antioxidant Capacity, Cytotoxicity and Anti-Cancer Activity of Methanolic Urtica dioica L. Leaf Extract as a Food Supplement
Authors: KORKMAZ SEROL , AYDIN Hanife Banu , Omurtag Korkma B. İrem z
Published: January 2024

Antioxidant capacity, cytotoxicity on two vital cell lines and the anti-cancer activity of methanolic Urtica dioica L. leaf extract (UDE) collected from Duzkoy, Giresun, Turkey were studied by determining safe concentration. The antioxidant capacity of the extract was expressed as vitamin C equivalency by spectrophotometric MTT assay. The cytotoxic concentration 50% was measured by the linearity between UDE concentrations (CC50) and the cell viability of non-cancer kidney cell lines (BHK-21, MDBK). The anti-cancer activity was conducted on human hepatocellular carcinoma cells (HepG2) by determining inhibition concentration (IC50) on cell proliferation. The vitamin C equivalence of UDE increased linearly by increasing the concentration. The cytotoxic and non-toxic concentrations of UDE were determined on BHK-21 and MDBK with 15.71 mg/ml and 5.14 mg/ml of CC50 respectively. The extract inhibited the proliferation of human hepatocellular carcinoma cells with a 2.46 mg/ml of IC50. In conclusion, the present study tried to explain in detail the dose-dependent activity of Urtica dioica L. leaf extract. The dose-response results showed that Urtica dioica L. leaf extract could have low cytotoxicity, but potential anti-cancer activity at safe concentrations.