bluuebunny/crossref_metadata_2025 huggingface dataset:
Epidemiologic and laboratory observations of Chlamydia psittaci infection in pet birds
Authors: Mohan Ram
Published: February 2025

Psittacosis was diagnosed in 13 (24%) of 55 pet bird submissions in the first 3 months of 1983, compared with 18 (17%) of 103 in 1982, 4 (4.6%) of 87 in 1981, and 3 (8%) of 36 in 1980. The numbers and types of birds in which psittacosis was diagnosed were 2 of 47 budgerigars, 8 of 45 cockatiels, 3 of 11 small parrots (lovebirds, conures), 20 of 116 medium-sized parrots (African Grays, Amazons), 2 of 21 macaws, and 3 of 21 cockatoos. Thirty-nine percent of psittacosis-positive birds were received from pet bird owners, compared with 21% from pet shops, 18% from pet bird breeders and fanciers, and 13% from pet bird jobbers and retailers.

Most frequently observed clinical signs were anorexia, weight loss, and diarrhea or yellowish droppings. Major gross lesions were spleno-hepatomegaly (77%), followed by enteritis (53%), sinusitis (47%), airsacculitis (37%), pneumonitis (23%), and pericarditis (10%).

Regarding the 38 cases of confirmed psittacosis in pet birds since 1980, transmission of the disease to human beings was confirmed in 2 cases and suspected in 4 cases.
Blood pressures obtained by indirect measurement in conscious dogs
Authors: Coulter Dwight B. , Keith James C.
Published: February 2025

Heart rate and arterial systolic, mean, and diastolic blood pressures were measured indirectly in apparently healthy dogs in clinical situations (eximination rooms, cages, or runs) and in 3 groups of abnormal dogs. An electronic automatic sphygmomanometer measured and analyzed arterial pulses (oscillometric method). Apparently healthy dogs had a mean ± sd heart rate of 134 ± 32 beats/min and systolic, mean, and diastolic pressures of 144 ± 27, 110 ± 21, and 91 ± 20 mm of Hg, respectively. The mean systolic pressure was significantly higher in hospitalized dogs than in nonhospitalized dogs. When compared with relaxed dogs, playful dogs had a higher mean heart rate. Apprehensive dogs had a higher mean diastolic pressure than did relaxed dogs. The mean heart rate and blood pressures of panting dogs were not significantly different from the mean values from relaxed dogs. Heavier (> 18 kg) and older (> 2 years) dogs had lower mean heart rates and higher pressures, compared with lighter (≤ 18 kg) and younger (≤ 2 years) dogs. Infection with Dirofilaria immitis had no effect on heart rate and lood pressures when compared with apparently healthy dogs. Dogs with renal failure had a significantly higher mean diastolic pressure and dogs with mitral regurgitation had a significantly lower mean diastolic pressure, compared with apparently healthy dogs.
Congenital blindness with ocular developmental anomalies, including retinal dysplasia, in Doberman Pinscher dogs
Authors: Bergsjø T. , Arnesen K. , Heim P. , Nes N.
Published: February 2025

Hereditary, congenital blindness was studied in 15 Doberman Pinscher pups. The eyes were smaller than normal, and there was complete absence of the anterior chamber, aphakia, retinal detachment, and dysplasia as well as an irregular swelling and partial depigmentation of the retinal pigment epithelial cells. It was concluded that the condition was inherited as a recessive, autosomal trait.
Use of hyperimmune serum, vaccination, and certain management procedures for control of pseudorabies in swine
Authors: Hsu Frank S. , Lee Robert C. T.
Published: February 2025

A program involving use of hyperimmune serum, vaccination, and certain management procedures for the control of pseudorabies was evaluated on several farms on which the disease was enzootic. Neonatal mortality and reproductive failures on farms utilizing the program were compared with death losses and reproductive failures on farms not utilizing the program. The reduction in preweaning mortality and reproductive failures between the treated and non-treated groups were 42.1% and 39.6%, respectively.
Zinc deficiency in sheep and goats: Three field cases
Authors: Nelson D. R. , Wolff W. A. , Blodgett D. J. , Luecke B. , Ely R. W. , Zachary J. F.
Published: February 2025

Zinc deficiency was diagnosed in 2 flocks of sheep and a herd of goats. Alopecia and eating of wool were observed. Skin lesions were hyperkeratosis and parakeratosis. Abnormal hoof growth and a closed stance with arched back and bowed hindlimbs were seen. Anorexia, depression, and foot soreness diminished quickly after zinc supplementation. Skin lesions healed and hair and wool growth resumed. A cause for the deficiency could not be established.
Hyperosmotic oral replacement fluid for diarrheic calves
Authors: Jones R. , Phillips R. W. , Cleek J. L.
Published: February 2025

Twenty-five diarrheic neonatal calves, none of which was recumbent, were used to determine oral efficacy of a commercial product for fluid replacement, either by suckle or intubation. Changes in plasma protein, glucose, sodium, potassium, and osmolality as well as blood lactate and pcv were measured. Core body temperature and surface temperature at the hock and fetlock were monitored. Data were analyzed for interaction with time and response according to clinical condition. Significant differences (P< 0.05) following therapy were restricted to glucose and potassium changes. Beneficial posttreatment trends were observed in cutaneous temperature, blood lactate, plasma protein, and pcv values.
Pathologic findings in manatees in Florida
Authors: Buergelt Claus D. , Bonde Robert K. , Beck Cathy A. , O’shea Thomas J.
Published: February 2025

Necropsy and microscopic examinations of 16 West Indian manatees (Trichechus manatus) revealed that the mortality of many of the animals was associated with environmental factors such as human-inflicted trauma and cold winters. Natural disease processes accounted for the death of only 1 manatee. In 3 manatees, the cause of death could not be determined.
Predisposition to invasive pneumococcal illness following parainfluenza type 3 virus infection in chimpanzees
Authors: Jones Ellen E. , Alford Patricia L. , Reingold Arthur L. , Russell Harold , Keeling Michael E. , Broome Claire V.
Published: February 2025

An outbreak of invasive disease, including pneumococcal bacteremia, meningitis, and pneumonia, involved 17 of 83 (20.5%) chimpanzees at a primate rehabilitation unit. Invasive disease was more common in splenectomized than in nonsplenectomized animals (42.9% vs 18.4%), but the difference was not statistically significant. The outbreak followed closely an outbreak of upper respiratory tract infection (urti) that occurred with equal frequency in splenectomized and nonsplenectomized chimpanzees. Those with urti were 5.7 times as likely to develop invasive disease than those without urti (P<0.005). Fourteen of 20 (70%) chimpanzees with recent urti and serologically examined had a 4-fold or greater rise in titer to parainfluenza type 3 virus.

The outbreak of invasive disease occurred despite the fact that most of the chimpanzees had been vaccinated with pneumococcal vaccine. Efficacy of pneumococcal vaccine could not be demonstrated among any segment of the chimpanzee population, and testing of sera from 23 vaccinated chimpanzees against 4 pneumococcal serotypes (3, 6, 8, and 14) failed to show a meaningful immune response.

The findings demonstrated that viral urti can predispose primates to invasive infections and suggested that pneumococcal vaccine is not protective in chimpanzees.
An epidemiologic study of mortality in veal calves subsequent to an episode of zinc toxicosis on a California veal calf operation using zinc sulfate-supplemented milk replacer
Authors: Graham T. W. , Thurmond M. C. , Clegg M. S. , Keen C. L. , Holmberg C. A. , Slanker M. R. , Goodger W. J.
Published: February 2025

Ninety-five 3- to 6-month-old male Holstein veal calves were evaluated after an episode of zinc toxicosis, to describe clinical signs and to identify management and/or host-related factors that may have contributed to death. Clinical signs appeared 23 days after feeding of milk replacer commenced. Of 85 calves examined, 64 had pneumonia (75.5%), 62 had ocular signs (72.9%), 46 had diarrhea (54.1%), 34 were anorectic (40.0%), 15 were bloated (17.6%), 8 had cardiac arrhythmias (9.4%), 3 had convulsions (3.5%), and 3 were polydipsic/polyphagic (3.5%). Clinical signs began to appear when calves each were being fed approximately 1.5 to 2.0 g of zinc/day and exposed to a cumulative zinc intake of 42 to 70 g, from a milk replacer containing 706 μg of elemental zinc/g of milk replacer. Of 95 calves studied, 1 died before zinc was supplemented, 16 died during the episode, 12 were euthanatized, 1 was lost to follow-up evaluation, 1 was culled, and 64 were slaughtered. Deaths attributable to zinc toxicosis were observed between 25 and 53 days after the milk replacer was supplemented with zinc. Calves died while being exposed cumulatively to 30 to 66 g of zinc. The factors of previous pneumonia severity, age, cumulative daily exposure (g) to zinc, and calf location within a bay were examined for possible associations with mortality, using stepwise logistic regression. Though younger calves tended to have a higher mortality than older calves, neither age category nor severity of pneumonia, before zinc supplementation, accounted for a significant mortality. Calves located in the front of a bay and fed first were 6.88 (95% CI = 1.41, 33.72) times more likely to die than were calves in the rear of a bay. When the variable location was included in the saturated logistic model, calves cumulatively exposed to 45 to 65 g of zinc were 60.87 (95% CI = 8.07, 458.58) times more likely to die than calves exposed to less than 45 g and were 362.12 (99% CI = 48.04, 2,729.00) times more likely to die than calves exposed to more than 65 g of zinc. High mortality of the intermediate (45 to 65 g) group was attributed to that group accumulating zinc at the highest rate, and having exceeded a threshold of toxicosis near 45 g.
Sagittal fractures of the third carpal bone in horses: 12 cases (1977–1985)
Authors: Fischer A. T. , Stover S. M.
Published: February 2025

Third carpal sagittal fractures were found to be related to racing injuries in 10 of 12 horses. These fractures occurred most commonly on the medial aspect of the bone. A dorsoproximal-dorsodistal view of the carpus was required to visualize the fracture in all cases. Healing of the fracture required periods of rest of up to one year. Conservative management of these fractures resulted in return to function in 7 of 12 horses.
Cardiopulmonary and behavioral effects of fentanyl-droperidol in cats
Authors: Grandy J. L. , Heath R. B.
Published: February 2025

The combination of the narcotic fentanyl (0.4 mg/ml) and the tranquilizer droperidol (20 mg/ml) was injected into 12 healthy adult cats at a rate of 1 ml/9 kg of body weight, sc. Arterial blood pressure, heart rate, respiratory frequency, PaCO2, and PaO2, arterial pH (pHa), and rectal temperature were measured before and 30, 60, 90, and 120 minutes after injection of fentanyl-droperidol. Respiratory frequency was decreased significantly (P<0.05) and heart rate increased significantly (P<0.05) at all measurement intervals after drug administration. Observed decrements in arterial blood pressure were not significant. Arterial PO2, PCO2, and pH did not change significantly. A significant (P<0.05) decrease in body temperature was measured 90 minutes after drug administration. All cats were calm, tractable, and frequently assumed lateral recumbency after administration of fentanyl-droperidol. This maximal tranquil state was determined to be 30 to 60 minutes after drug administration.
Partial mandibulectomy for treatment of mandibular fractures in dogs: Eight cases (1981-1984)
Authors: Lantz Gary C. , Salisbury S. Kathleen
Published: February 2025

Partial mandibulectomy was performed in 8 dogs with open or infected mandibular fractures (3 second degree and 5 third degree) because of economic restriction, osteomyelitis, or severe bone and soft tissue injury. Six dogs ate voluntarily by the second day after surgery, and 2 dogs required pharyngostomy tube feeding for 2 to 6 days. Complications included oral wound dehiscence (3 dogs), shifting of the mandible toward the operated side (6 dogs), and drooping of the tongue (2 dogs). Slight malocclusion was of no consequence, and all dogs were eating normally at follow-up evaluations (10 days to 24 months; median, 13 months). Mandibular function was maintained in all dogs.
Toxicity of high doses of griseofulvin in cats
Authors: Kunkle Gail A. , Meyer Dennis J.
Published: February 2025

Eight adult cats were treated with griseofulvin (110 to 145 mg/kg of body weight) daily for 11 weeks; 2 control cats were given a gelatin capsule daily. Hemograms and hepatic enzyme activities were monitored weekly for all cats. Bone marrow examinations were performed before administration of the drug and twice during the study. Cats were observed for untoward clinical effects. Signs of toxicosis (clinical, hematologic, or hepatic) were not found at any time during, or at the cessation of the study. Although the sample number of treated cats was small, it was concluded that hematologic or hepatic abnormalities that develop with the use of high-dose griseofulvin treatment may be an idiosyncratic reaction found only in a few cats.
Coxofemoral luxations in cattle: 22 cases (1980-1985)
Authors: Tulleners Eric P. , Nunamaker David M. , Richardson Dean W.
Published: February 2025

Traumatic, unilateral coxofemoral luxation was diagnosed in 22 female dairy cattle (12 calves ≤13 months old, 10 adults). Physical examination differentiated between dorsal and ventral luxations, but could not distinguish luxations from fractures of the proximal aspect of the femur that occurred in 2 additional adults. Luxations were confirmed by radiography in 5 animals.

Closed reduction was accomplished in only 1 calf. A craniolateral surgical approach to the hip, using mechanically assisted traction, was successful in reducing 95% (20/21) of the luxations.

Craniodorsal luxations (16) were most common. Ninety-four percent of the animals were ambulatory before surgery. None had concomitant musculoskeletal injuries and 75% (12/16) survived for a long period. Five of 6 animals with ventral luxations arrived recumbent, with serious complicating musculoskeletal injuries, and only 2 of these animals survived for a long period.

Calves had a better long-term survival rate (75% vs 50%) and a lower reluxation rate (17% vs 40%), compared with adults.
Vertebral canal and spinal cord mensuration: A comparative study of its effect on lumbosacral myelography in the Dachshund and German Shepherd Dog
Authors: Morgan Joe P. , Atilola Matthew , Bailey Cleta Sue
Published: February 2025

One hundred noncontrast spinal radiographic studies followed by myelography were evaluated to compare vertebral canal size and spinal cord location and size in a chondrodystrophic breed (50 Dachshunds) with those variables in a nonchondrodystrophic breed (50 German Shepherd Dogs). Measurements were made of the sagittal diameter (height) of the vertebral canal, sagittal diameter (height) of the spinal cord, and transverse diameter (width) of the spinal cord in the lumbar and sacral regions. Differences were detected in the craniocaudal location of maximal vertebral canal height and maximal spinal cord height. The spinal cords in the Dachshunds terminated further caudally than those in the German Shepherd Dogs. Location of maximal spinal cord width was different between the breeds, consistent with the apparent, more caudal termination of the cord in the Dachshunds. The ratio of spinal cord to vetebral canal heights was notably greater in the Dachshunds than in the German Shepherd Dogs. These differences in vertebral canal and spinal cord mensuration may influence the choice of radiographic technique and its interpretation. Injection sites may be selected further cranially in German Shepherd Dogs (L4-5) than in Dachshunds (L5-6).
The economic benefit of treating subclinical Streptococcus agalactiae mastitis in lactating cows
Authors: Yamagata M. , Goodger W. J. , Weaver L. , Franti C.
Published: February 2025

The economic benefits of treating lactating cows for Streptococcus agalactiae mastitis were studied at a large (689 milking cows) central California dairy. Postcure milk production of case cows (infected, treated, and cured) was compared with production of paired control cows (uninfected) and was matched for yield, days in milk, days in gestation, and parity. A simulation was used to plot expected lactation curves for mastitic cows (infected, not treated) with characteristics similar to those of each control cow, and these curves were compared with actual case-cow lactation curves. The difference in actual and expected production was used to calculate net economic benefits of treatment.

Comparison of expected with actual production indicated a net benefit from treatment of $396/cow for cows treated in early lactation and $237 for cows treated in midlactation, but a net loss of $55 for cows treated in late lactation. Lactation number did not have a significant impact on economic benefits of treatment.

In contrast to other studies indicating no economic benefit from treating mastitis during lactation, this study’s positive results may have been attributable to the high cure rate (98%) and the subclinical form of mastitis being treated. Streptococcus agalactiae mastitis treatment during early and midlactation would appear to be an economically justifiable option for dairy managers.
Serologic correlation of suspected Leptospira interrogans serovar pomona-induced uveitis in a group of horses
Authors: Sillerud C. L. , Bey R. F. , Ball M. , Bismer S. I.
Published: February 2025

After the observation of 2 horses with uveitis on a horse farm in the Minnesota River valley, 100 horses from this geographic area were given ophthalmologic examinations and were evaluated serologically for leptospirosis. A statistically significant (P<0.001) association was observed between the finding of antibodies against Leptospira interrogans serovar pomona and uveitis.
Torsion subgroups of rational Mordell curves over some families of number fields
Authors: Gužvić Tomislav , Roy Bidisha
Published: February 2025

Mordell curves over a number field K are elliptic curves of the form y
2 = x
3 + c, where c ∈ K \ {0}. Let p ≥ 5 be a prime number, K a number field such that [K : ℚ] ∈ {2p, 3p}. We classify all the possible torsion subgroups E(K)tors for all Mordell curves E defined over ℚ when [K : ℚ] ∈ {2p, 3p}.
Laplacian energy and first Zagreb index of Laplacian integral graphs
Authors: Hameed Abdul , Khan Zia Ullah , Tyaglov Mikhail
Published: February 2025

The set Si,n
= {0, 1, 2, …, i − 1, i + 1, …, n − 1, n}, 1 ⩽ i ⩽ n, is called Laplacian realizable if there exists a simple connected undirected graph whose Laplacian spectrum is Si,n
. The existence of such graphs was established by S. Fallat et all. In the present paper, we find the Laplacian energy and first Zagreb index of graphs whose Laplacian spectrum is Si,n
.
A new class of unsaturated mappings: Ćirić-Reich-Rus contractions
Authors: Berinde Vasile , Păcurar Mădălina
Published: February 2025

Using the technique of enriching contractive type mappings, we introduce a more general concept of enriched Ćirić-Reich-Rus contraction than the one studied in [Berinde, V.; Păcurar, M. Fixed point theorems for enriched Ćirić-Reich-Rus contractions in Banach spaces and convex metric spaces. Carpathian J. Math.
37 (2021), no. 2, 173–184.] and provide convergence results for the Krasnoselskij iterative algorithm used to approximate their fixed points. Examples to illustrate the effectiveness of the new results as well as comparison to other classes of contractive type mappings existing in literature are also presented. In this context, we also conclude that Ćirić-Reich-Rus contractions form a class of unsaturated mappings.
Finite-dimensional Zinbiel algebras and combinatorial structures
Authors: Ceballos Manuel , Núñez Juan , Tenorio Ángel F.
Published: February 2025

In this paper, we study the link between finite-dimensional Zinbiel algebras and combinatorial structures or (pseudo)digraphs determining which configurations are associated with those algebras. Some properties of Zinbiel algebras that can be read from their associated combinatorial structures are studied. We also analyze the isomorphism classes for each configuration associated with these algebras providing a new method to classify them and we compare our results with the current classifications of 2- and 3-dimensional Zinbiel algebras. We also obtain the 3-vertices combinatorial structures associated with such algebras. In order to complement the theoretical study, we have designed and performed the implementation of an algorithm which constructs and draws the (pseudo)digraph associated with a given Zinbiel algebra and, conversely, another procedure to test if a given combinatorial structure is associated with some Zinbiel algebra.
Operational matrix method to solve nonlinear reaction-advection-diffusion equation in fractional order system
Authors: Craciun E-M. , Singh M.
Published: February 2025

In the present paper, a numerical scheme is discussed to solve one-dimensional nonlinear diffusion equation of fractional order in which collocation is performed using the Lucas operational matrix. Since the spectral collocation method is used in the proposed method, therefore the residual, initial and boundary conditions of the presented problem are collocated at fixed collocation points. The result is a system of nonlinear equations that can be solved by using Newton’s method. Through error analysis and application to some existing problems, the accuracy of the method is confirmed. The obtained results are presented in tabular forms, which clearly show the higher accuracy of the proposed method. The variations of the solute profile of the proposed model are shown graphically due to the presence or absence of advection and reaction terms for different particular cases.
On (1,2)-absorbing primary ideals and uniformly primary ideals with order ≤ 2
Authors: Alhazmy Khaled , Almahdi Fuad Ali Ahmed , Bouba El Mehdi , Tamekkante Mohammed
Published: February 2025

This paper introduces a subset of the set of 1-absorbing primary ideals introduced in [3]. An ideal I of a ring R is (1,2)-absorbing primary if, whenever non-unit elements α, β, γ ∈ R with αβγ ∈ I,then αβ ∈ I or γ
2 ∈ I. The introduced notion is related to uniformly primary ideals introduced in [5]. The first main objective of this paper is to compare (1,2)-absorbing primary ideals with uniformly primary ideals with order less than or equal 2, as well as to characterize them in many classes of rings. The second part of this paper characterizes, by using (1,2)-absorbing primary ideals, the rings R for which all ideals lie between N(R) (the nil-radical of R)and N(R)2.
Green-Lindsay thermoelasticity for double porous materials
Authors: Emin Anamaria N. , Florea Olivia A.
Published: February 2025

The main purpose of this paper is to obtain new results in the thermoelasticity for double porous materials, starting from the classical theory of Green-Lindsay’s elasticity. The novelty of the proposed method consists in proving a reciprocal theorem and obtaining the energy equation in the context of Green-Lindsay’s thermoelasticity for double porous materials. The added value in this article is the result regarding the uniqueness of the solution of the problem with mixed data for bodies with double porosity.
Weighted pseudo almost automorphic functions with applications to impulsive fractional integro-differential equation
Authors: Kavitha Velusamy , Arjunan Mani Mallika , Baleanu Dumitru , Grayna Jeyakumar
Published: February 2025

This paper’s main motivation is to study the notion of weighted pseudo almost automorphic (𝒲𝒫𝒜𝒜) functions and establish the existence results of piecewise continuous mild solution of fractional order integro-differential equation with instantaneous impulses. The usual 𝒲𝒫𝒜𝒜 functions may not work since the solution of impulsive differential equations may not be continuous. Thus in order to give a broader spectrum, we introduce this concept. We establish main results by using the Banach contraction mapping principle and Sadovskii’s fixed point theorem. An example is shown to exhibit our analytic findings.
About the B-concavity of functions with many variables
Authors: Meleşteu Alexandra Diana
Published: February 2025

The paper deals with the study of the property of B-concavity and BB concavity in the bi-dimesional case and with the relation between these properties and the Bernstein operators defined on a simplex.
Predictability and uniqueness of weak solutions of the stochastic differential equations
Authors: Merkle Ana
Published: February 2025

Causality is a topic which receives much attention nowadays and it represents a prediction property in the context of possible reduction of available information in order to predict a given filtration. In this paper we define the concept of dependence between stochastic processes and between filtrations, named causal predictability, which is based on the Granger’s definition of causality. This definition extends the ones already given in the continuous time. Then, we provide some properties of the given concept.

Finally, we apply the concept of causal predictability to the processes of the diffusion type, more precisely, to the uniqueness of weak solutions of the stochastic differential equations.
Variational inequality for a vector field on Hadamard spaces
Authors: Ranjbar Sajad
Published: February 2025

Our purpose is to study the variational inequality problem for a vector field on Hadamard spaces. The existence and uniqueness of the solutions to the variational inequality problem associated with a vector field in Hadamard spaces are studied.
On approximation properties of some non-positive Bernstein-Durrmeyer type operators
Authors: Vasian Bianca Ioana
Published: February 2025

In this paper we shall introduce a new type of Bernstein Durrmeyer operators which are not positive on the entire interval [0, 1]. For these operators we will study the uniform convergence on all continuous functions on [0, 1] as well as a result given in terms of modulus of continuity ω(f, δ). A Voronovskaja type theorem will be proved as well.
Regular and Boolean elements in hoops and constructing Boolean algebras using regular filters
Authors: Aaly Kologani M. , Jun Y.B. , Borzooei R.A.
Published: February 2025

We study hoops in order to give some new characterizations for regular and Boolean elements in hoops and we study the relationship between them. Specially, we prove that any bounded v-hoop is a Stone algebra if and only if MV -center set and Boolean elements set are equal. Then we define the concept of regular filter in hoops and v-hoops with RF-property and peruse some properties of them. In addition, we show that each v-hoop with RF-property, is a Boolean algebra and any hoop A with RF-property such that B(A) = {0, 1}, is a local hoop. Finally, we prove that any hoop A has RF-property if and only if Spec(A) = Max(A) and if and only if A is a hyperarchimedean.
The rotational curvature of plane curves
Authors: Crasmareanu Mircea
Published: February 2025

We introduce and study a new curvature function for plane curves inspired by the weighted mean curvature of M. Gromov. We call it rotational being the difference between the usual curvature and the inner product of the normal vector field and the angular vector field. But, since the problem of vanishing of this curvature involves complicated expressions we define a second rotational curvature. Both these curvatures are computed for several examples.
Codes parameterized by the edges of a bipartite graph with a perfect matching
Authors: Sarabia Manuel González , Villarreal Rafael H.
Published: February 2025

In this paper we study the main characteristics of some evaluation codes parameterized by the edges of a bipartite graph with a perfect matching.
New Criteria for Functions in a Class of Meromorphically Strongly Starlike Functions
Authors: Cho Nak Eun , Kim Inhwa , Srivastava H. M.
Published: February 2025

The authors propose to investigate some new criteria for a certain class of meromorphically strongly starlike functions in the punctured open unit disk. Some intriguing applications that arise as special cases of the main results, which are presented in this study, are also considered.
On controlled Stampacchia-type vector variational inequalities
Authors: Cebuc Cristina-Mihaela , Treanţă Savin
Published: February 2025

This paper establishes connections between new classes of generalized Stampacchia (weak) vector variational control inequalities and the corresponding multiple-objective extremization problems. In this regard, we introduce the concepts of (strictly) strong convexity and preconvexity, associated with controlled multiple integral type functionals, and a mean value type theorem.
Preparing Pre-Service STEM Teachers in an Emerging Global Environment
Authors: Abah Joshua Abah , Iji Clement Onwu , Chinaka Taurayi Willard
Published: February 2025

The dynamics of Science, Technology, Engineering and Mathematics (STEM) teacher preparation has changed very dramatically in line with present-day realities and the demands of the emerging global environment. This work explores in detail the exigencies of global issues as they influence STEM education with specific attention given to 21st century skills, impact of technology, mathematics competencies, climate change, global competencies, and equity, diversity and inclusiveness. The article canvases for novel approaches to preparing STEM teachers who are skilled and knowledgeable practitioners, culturally aware, know about world events and global dynamics, literate for the 21st century, collaborative team members, effective users of technology and media, and responsible and ethical citizens. Recommendations on the knowledge, skills and attitudes that STEM teacher preparation should project were also given.
Biology Learners’ Conception of Ecology of a Wetland Ecosystem
Authors: Tenane Makabelo , Mokuku Tsepo
Published: February 2025

Wetlands ecosystems play an important role and are relevant to biotic and abiotic factors including survival of humans. Therefore, it is imperative that learners in Lesotho become sensitized to the knowledge about the ecology of wetland ecosystems. Few studies investigated Lesotho students’ ecological literacy of wetlands hence this study explored biology learners’ knowledge of that topic. The research was conducted using a mixed research approach and data was collected using observation and close-ended questionnaires. This research approach neutralized the weaknesses of data and strengthened the validity of the research findings. The ecological literacy has been adopted as a theoretical framework. The research findings revealed that most participants had moderate ecological knowledge of a wetland ecosystem and students’ conceptions were mostly based on their cultural background not much from class teaching. Findings also revealed that boys were more ecologically literate than girls. For further research, higher order levels of Bloom’s taxonomy could be tested by using other different research tools and teachers’ approaches in teaching of ecological concepts.
On the Embedded Embodiment of Dancers in Language-based Site-specific Choreography
Authors: Rouhiainen Leena
Published: February 2025

This keynote presentation, held at the 16th Nordic Forum for Dance Research (NOFOD) conference, scrutinises how two cases of progressive forms of site-specific and language-based choreographic practices by performing dancers enact embedded embodiment. The addressed works of Paula Kramer (2021) and Kirsi Heimonen and Leena Rouhiainen (2022; 2024a) both entail motional exploration of chosen physical environments as well as their language-based articulation. The presentation introduces concrete examples from these works and discusses the site-specificity and language-use by the dancer-performers in dialogue with conceptions from embodied cognition and phenomenology. The examination of the notions of embedded embodiment or intercorporeality and the gestural base of language is the means through which the presentation suggests that there is a continuity between situated lived bodily experience and writing. The presentation likewise recommends that we consider language and linguistic expression integral to the medium of dance.
Anpassa eller frigöra
Authors: Schaffar Birgit
Published: February 2025

Birgit Schaffar är docent i pedagogikens filosofi vid Helsingfors universitet. I åtta studier tar hon sina läsare med på vad hon kallar ett filosofiskt återvinningsarbete för att få syn på vad pedagogikens uppdrag borde vara idag. Hon ger exempel på aktuella diskussioner om pedagogikens möjligheter och utmaningar där pedagogik beskrivs som en enkelriktad anpassning av den nya generationen till de rådande samhälleliga ramar som styr vårt nuvarande liv. Som motvikt och kontrast påminner hon om vad pedagogiken förmår vara om vi istället ser den som en väg till frigörelse.
Med Hannah Arendt, Simone de Beauvoir, Simone Weil, Paulo Freire, bell hooks och Vanessa Machado de Oliveira beskriver Schaffar pedagogik som en gemensam, granskande dialog mellan generationer. I denna generationsöverskridande dialog är alla tillfrågade att reflektera över hur vi lever våra liv just nu, samt att ta ställning till vad som är viktigt, också med tanke på kommande generationer.
Heuristic Processes and the Development of Metacognition in Mathematics Teaching and Learning
Authors: Morales Eberto Pablo Gutiérrez , Obregón Jorge Manuel Ríos , Riofrio Myriam Mercedes Tipan , Serra José Enrique Martínez , Chávez Arelys García , Pérez Gretter Martínez
Published: February 2025

Objectives: This study aims to explore the conceptual and procedural elements of using heuristics in the teaching of Experimental Sciences and their impact on strengthening students' cognitive and metacognitive competencies. Heuristic strategies such as analogy, working backward, and problem segmentation are analyzed to determine their role in metacognitive development.
 
Theoretical Framework: The theoretical framework emphasizes heuristics as a set of methods and strategies that foster discovery and problem-solving. These tools are essential for promoting active and reflective learning, as well as addressing current academic and professional challenges.
 
Methodology: This study adopts a qualitative-descriptive approach based on action research. Heuristic strategies applied in educational contexts were analyzed through interviews with students and teachers, along with systematic classroom observations.
 
Results and Discussion: The findings reveal that integrating heuristic processes into teaching enhances the understanding of complex concepts, fosters autonomous learning, and promotes critical reflection among students. Additionally, teacher training in these strategies is identified as crucial to maximizing their effectiveness in educational settings.
 
Research Implications: This study highlights the importance of incorporating heuristic strategies into educational programs to strengthen students' metacognitive competencies and improve reflective learning. Future research should explore the adaptability of these strategies across different cultural and educational contexts.
 
Originality/Value: This work stands out for its detailed analysis of heuristics as a key tool in developing metacognitive competencies. It provides empirical evidence supporting the relevance of these strategies for education in Experimental Sciences and offers a conceptual foundation for future research.
Comparison of Positive and Negative Symptoms in People Diagnosed With Schizophrenia
Authors: Kutllovci Faton
Published: February 2025

Objective: This study aims to shed light on the specification and comparison of positive symptoms and negative in schizophrenic patients.
 
Theoretical Framework: With the influence of various structural and ideological factors, the family and society now play an expanded role in terms of behavior, attitudes, beliefs and relationships. This impact has been reflected in all societies in the world; however, while Western countries have adapted social policies to accommodate these changes, developing countries have not created appropriate structures. In Kosovo, funding of mental health services remains low, while mental health problems represent 12.3% of general illnesses and 30.8% of causes of work incapacity.
 
Method: The study is descriptive-analytical, qualitative and quantitative. The research was carried out in four municipalities of Kosovo, whereby, patients with schizophrenia who appear in psychiatric institutions and their caregivers/family members have served as subject samples.
 
Results and Discussion: The results have shown that the presence of schizophrenia is reflected in the prevalence of a low level of education, a high level of unemployment, as well as harmful activities such as smoking and alcohol consumption and physical inactivity. The PNS-Q Self-report and Family Member questionnaires have shown significant correlations for the subscales of positive and negative symptoms.
 
Research Implications: It is recommended for patients with schizophrenia and their families a well-structured strategy created in collaboration with experts in relevant fields, including social protection, psychiatric medical services, education, and integration plan in social life.
 
Originality/Value: This research article aims to increase knowledge about the disease of schizophrenia, especially its symptoms.
Erectile Dysfunction in Primary Care: Protocol
Authors: Matias Francisco , Patrício Ana , Pereira Ferdinando
Published: February 2025

Penile erection is a complex physiological process, dependent on various factors, such as neurological, vascular, muscular and psychological, and fundamental to a man’s sex life and consequent well-being. Erectile dysfunction is defined as the persistent inability to achieve and/or maintain an erection sufficient to allow satisfactory sexual performance. This symptom can significantly affect a man’s quality of life, as well as that of his sexual partners, and is strongly related to modifiable risk factors and cardiovascular disease.
Primary health care is the most likely setting to address this issue, and family doctors must be prepared to act appropriately. With this in mind, using the guidelines of the European Association of Urology as the main bibliographic basis and adapting them to clinical practice, this protocol was drawn up to be used in all aspects associated with sexual dysfunction and the patient’s biopsychosocial context. In a practical and organized way, it is intended that, in SOAP record format, it will be possible to assess the patient and offer a therapeutic plan that suits their needs and expectations in order to improve their quality of life and prevent worsening of their individual state of health, without fear of medication or guidance, with the appropriate scientific knowledge.
Uczniowie szkół ponadpodstawowych jako odbiorcy wybranych materiałów dydaktycznych
Authors: Marzec-Jóźwicka Magdalena
Published: February 2025

The article examines three educational aids designed for high school students. The following topics were selected for discussion: summaries of romantic readings by Adam Mickiewicz, educational films by Mieczysław Mietczyński known as Profesor Niczego and psychological guides by Przemysław Staroń. The aids are aimed to present the content of the literary works and, assess their teaching potential. It is shown how students are perceived by the authors of the creative works and what attitude young learners have towards these aids. Finally, the tasks of a contemporary Polish teacher are outlined.
Exploring the Link between Learner Workbooks, their Achievement in Stoichiometry, and their Teachers’ Teaching
Authors: Kotoka Love , Kriek Jeanne , Kotoka Jonas Kwadzo
Published: February 2025

Given the challenges within stoichiometry that contribute to underperformance, previous studies have explored teachers’ understanding of the topic or sought to determine the impact of various teaching strategies. However, this study takes a different approach by exploring classroom dynamics. It does so by comparing learner workbooks, records of classroom observations, and performance in a stoichiometry test. A descriptive comparative research design was employed with six teachers, their schools, and their 249 grade 11 chemistry learners in a rural area. Data were collected using learner workbooks (LWB), classroom observation schedules (COS), and stoichiometry achievement tests (SAT). Stein, Grover, and Henningsen’s (1996) levels of cognitive demand were used to analyse the achievement test, while a task analysis guide in science (TAGS) was used for learner workbooks and classroom observation schedules through document analysis. The six schools’ teachers and learners were compared in terms of how well the concepts were taught and how the schools performed. Findings indicate no discernible ranking of schools or topics in terms of LWBs. Furthermore, no link between the teachers’ teaching of stoichiometry and learners’ achievement in stoichiometry could be established.
The manifestation of discoid lupus erythematosus on the scalp.
Authors: Dzhavaeva Diana G. , Bazaev Vitaliy T. , Kobaidze Lamara M. , Pashinyan Albina G.
Published: February 2025

Scarred alopecia of the scalp is an urgent problem for both dermatologists and trichologists and accounts for approximately 5% of all cases of alopecia. A clinical case of a 47-year-old patient manifesting as foci of scar alopecia on the scalp is presented. According to the results of clinical, histological and dermatoscopic studies, the diagnosis of discoid lupus erythematosus was established. The patient was also examined by a rheumatologist (systemic lupus erythematosus was excluded, dynamic observation was shown). He received treatment with hydroxychloroquine, aevit and venarus. Externally: Lorinden A ointment, bepanten plus cream, shampoos containing zinc, ultraphonophoresis with hydrocortisone ointment course. Because of the treatment, there is a clinical improvement. Observation by a dermatovenerologist and repeated examination by a rheumatologist after 6 months are indicated. Due to the complex diagnosis and the similarity of the clinical picture, timely and complete examination and treatment is important in order to prevent or stop the formation of foci of alopecia. In turn, they also affect the psychoemotional background of a person and the formation of psychosocial maladaptation.
Results of excimer laser correction of secondary ametropia in patients with pseudophakia
Authors:   LLC “Clinic of Eye Diseases”, Yunusova A.A. , Sharafutdinova R.F. ,   KSMA Branch Campus of the FSBEIFPE RMACPE MOH Russia, Abdulaeva E.A. ,   LLC “Clinic of Eye Diseases”, Saushev S.A. ,   LLC “Clinic of Eye Diseases”, Abdullaeva K.A. ,   LLC “Clinic of Eye Diseases”
Published: February 2025

Excimer laser correction of secondary ametropia in patients after cataract phacoemulsification is becoming increasingly relevant due to the growing number of cataract surgeries. This study analyzed the results of 37 patients who underwent laser vision correction using LASIK and FEMTO LASIK methods. The patients were divided into two groups: the first group of 19 patients underwent LASIK, and the second group of 18 patients underwent FEMTO LASIK. A retrospective analysis of patient data over the past 4 years was conducted. One month after surgery, 92 % of patients in both groups showed significant improvement in uncorrected visual acuity. The average score was 0.88 ± 0.12 in the LASIK group and 1,0 ± 0.1 in the FEMTO LASIK group. After 12 months, 89 % of patients maintained stable results. The mean spherical equivalent after surgery was –0.25 ± 0.5 for LASIK and –0.2 ± 0.4 for FEMTO LASIK. Complications included dry eye syndrome in 13 % of patients and corneal epithelial defect in 6 % of patients in the LASIK group, which were successfully managed with conservative therapy. The results of the study confirm the high efficacy of excimer laser correction for eliminating secondary ametropia in patients with pseudophakia, with the FEMTO LASIK method showing better results compared to LASIK due to the higher precision and safety of the femtosecond laser.

Keywords: cataract phacoemulsification, secondary ametropia treatment, excimer laser vision correction, pseudophakia
Clinical experience with implantation of the IOL with the asymmetrical rotation optic mplus MF-20
Authors:   LLC «Eye Clinic «Lege Аrtis», Rostov-on-Don, Temirov N.E. , Temirov N.N. ,   LLC «Eye Clinic «Lege Аrtis», Rostov-on-Don
Published: February 2025

Purpose. The purpose of the work was to explore the results of implantation of the intraocular lens (IOL) with the asymmetric rotation optics Mplus MF-20 based on the following criteria that are the most important for a patient: visual acuity at various distances, spatial contrast sensitivity and nature of entoptic sensations. The authors examined 40 patients after bilateral implantation of MF-20. The testing two weeks after second eye surgery included monocular uncorrected visual acuity (UCVA) at a distance (5 m), near visual acuity (0.3 m) and at intermediate distances (0.6 m), and also spatial contrast sensitivity. The testing was carried out based on the black-and-white gratings at frequencies of 0.5; 1.0; 2.0; 4.0; 8.0; 16.0 cycle/degree. The contrast varied smoothly from 0.2 % to 100 %. A character of entoptic sensations was assessed using the VF-14 questionnaire.

Conclusions. A high distance visual acuity was achieved in all clinical case reports. The near visual acuity (0.3 meters) allowed most patients to read a standard newspaper text in a good light. Visual performance at intermediate distances (0.6 m), namely a computer and smartphone screen reading of information, also did not cause any troubles. When analyzing data of spatial contrast sensitivity after MF-20 implantation compared to the monofocal aspherical hydrophilic IOL Ray One (Rayner) it was concluded that some differences at medium and high frequencies are not significant. Subjective perceptions of patients after the IOL MF-20 implantation are also positive. Only 30 % of respondents have reported mild negative light events in the form of haloes and flare spots in 2 weeks after surgery. Thus, the results obtained confirm the possibility of the widespread use of the IOL MF-20 with the asymmetrical rotation optic in clinical practice within the conditions of bilateral symmetrical implantation.

Keywords: cataract, presbyopia, multifocal IOLs with asymmetric optics