bluuebunny/crossref_metadata_2025_split huggingface dataset:
RETRACTED: Enterprise strategic plan: Service business model
Authors: Maldynova Aizhana V. , Osmanov Zhasym D. , Smagulova Nyailya T. , Baigelova Aigul N. , Orazgaliyeva Elmaira B. 
Published: September 2022

AbstractFor the innovative development of the economy of Kazakhstan, marketing strategies for promoting innovative products concentrate scientific research and become a new element in the process of managing the market activities of enterprises. The purpose of the study was to determine the place of servitisation in Kazakhstani business, measure the level of servitisation and study the attitude of participants in the industrial market to the new strategy. To achieve the goal set within the framework of this study, marketing research was carried out. Data analysis was carried out using two programmes for data analysis. Presents the basic modelling principles used to form the structure with hidden variables. The authors tested the relationship between the level of motivation of the client and the level of servitisation. The client's motivation level does not affect the servitisation level. A literature review has shown that the implementation of servitisation is a complex task that depends on previous success. Among innovative enterprises in Kazakhstan, due to the underdevelopment of the market, traditional services dominate, while such trendy services as training, utilisation, integration are rarely offered and have a weak level of prevalence.
Thiotemplated Biosynthesis of Bacterial Polyyne Fatty Acids by a Designated Desaturase Triad
Authors: Kim Hak Joong , Ishida Keishi , Hertweck Christian 
Published: September 2022

AbstractVarious bacterial species are capable of producing highly modified fatty acid derivatives with conjugated triple bonds, which play important ecological roles as antifungals and toxins in mutualistic and pathogenic interactions. Furthermore, the terminal polyyne moiety is of interest as pharmacophore and as tag in bioorthogonal chemistry and live imaging. To gain insight into the assembly of these highly reactive natural products, we investigated tetrayne (caryoynencin and protegencin) biosynthesis genes (cay and pgn) from Trinickia caryophylli and Pseudomonas protegens. Pathway dissection and reconstitution in the heterologous host Burkholderia graminis revealed the genes minimally required for polyyne formation. Mutational analyses and biochemical assays demonstrated that polyyne biosynthesis is thiotemplated, involving a fatty acyl‐AMP ligase, a designated acyl carrier protein, and a thioesterase. Heterologous expression of point‐mutated desaturase genes showed that three desaturases work synergistically to introduce four triple bonds. These findings point to an intricate desaturase complex and provide important information for future bioengineering experiments.
Spontaneous gas gangrene of the lower limb in a patient with rectal cancer: A fatal diagnostic pitfall
Authors: Mahjoubi Mohamed Farès , Rezgui Bochra , Mabrouk Aymen , Essid Nada , Jedidi Laila , Ben Moussa Mounir 
Published: September 2022

AbstractSpontaneous gas gangrene of lower limb is rare. It may complicate digestive cancer or neutropenia. We report a case of spontaneous gas gangrene of the lower limb complicating a rectal cancer, initially diagnosed as deep vein thrombosis. The diagnostic delay was fatal.
Dynamics of the Reversible Inhibition during Methane Oxidation on Bimetallic Pd‐Pt Catalysts Studied by Modulation‐Excitation XAS and DRIFTS
Authors: Boubnov Alexey , Gremminger Andreas , Casapu Maria , Deutschmann Olaf , Grunwaldt Jan‐Dierk 
Published: September 2022

AbstractWater and NO reversibly inhibit catalytic methane oxidation to CO2 over Pd/Al2O3 and Pd−Pt/Al2O3 at temperatures near 50 % conversion. Modulation‐excitation X‐ray absorption spectroscopy (ME‐XAS) was used to characterize the interaction of the inhibitors with the Pd and Pt components. Simulated X‐ray absorption near‐edge structure (XANES) spectra of Pd and Pt with various surface species were used to verify the findings of ME‐XAS measurements. Diffuse‐reflectance infrared Fourier‐transform spectroscopy (DRIFTS) allowed to correlate methane oxidation with surface formate species. An interaction of water with active Pd sites and water coverage of the Al2O3 support caused a drastic drop in formate production, correlated with the observed inhibition. In a similar manner, nitrite groups formed from gas‐phase NO inhibited the production of formates. At higher temperatures, the inhibition was reversed into a promoting effect by surface nitrates formed from NO that oxidized gas‐phase methane. This approach is not only interesting for emission control but in general for catalysts where dynamic structural changes occur.
Unveiling the Potential of Innovative Gold(I) and Silver(I) Selenourea Complexes as Anticancer Agents Targeting TrxR and Cellular Redox Homeostasis
Authors: De Franco Michele , Saab Marina , Porchia Marina , Marzano Cristina , Nolan Steven P. , Nahra Fady , Van Hecke Kristof , Gandin Valentina 
Published: September 2022

AbstractA series of NHC‐based selenourea Ag(I) and Au(I) complexes were evaluated for their anticancer potential in vitro, on 2D and 3D human cancer cell systems. All NHC‐based selenourea complexes possess an outstanding cytotoxic potency, which was comparable or even better than that of the reference metallodrug auranofin, and were also able to overcome both platinum‐based and multi‐drug resistances. Intriguingly, their cytotoxic potency did not correlate with solution stability, partition coefficient or cellular uptake. On the other hand, mechanistic studies in cancer cells revealed their ability to strongly and selectively inhibit the redox‐regulating enzyme Thioredoxin Reductase (TrxR), being even more effective than auranofin, a well‐known TrxR inhibitor, without affecting other redox enzymes such as Glutathione Reductase (GR). The inhibition of TrxR in H157 human cancer cells caused, in turn, the disruption of cellular thiol‐redox homeostasis and of mitochondria pathophysiology, ultimately leading to cancer cell death through apoptosis.
Bromine Pentafluoride BrF5, the Formation of [BrF6]− Salts, and the Stereochemical (In)activity of the Bromine Lone Pairs
Authors: Möbs Martin , Graubner Tim , Eklund Kim , Karttunen Antti J. , Kraus Florian 
Published: September 2022

AbstractBrF5 can be prepared by treating BrF3 with fluorine under UV light in the region of 300 to 400 nm at room temperature. It was analyzed by UV‐Vis, NMR, IR and Raman spectroscopy. Its crystal structure was redetermined by X‐ray diffraction, and its space group was corrected to Pnma. Quantum‐chemical calculations were performed for the band assignment of the vibrational spectra. A monoclinic polymorph of BrF5 was quantum chemically predicted and then observed as its low‐temperature modification in space group P21/c by single crystal X‐ray diffraction. BrF5 reacts with the alkali metal fluorides AF (A=K, Rb) to form alkali metal hexafluoridobromates(V), A[BrF6] the crystal structures of which have been determined. Both compounds crystallize in the K[AsF6] structure type (R
, no. 148, hR24). For the species [BrF6]+, BrF5, [BrF6]−, and [IF6]−, the chemical bonds and lone pairs on the heavy atoms were investigated by means of intrinsic bond orbital analysis.
Oligonucleotides Featuring a Covalently Mercurated 6‐Phenylcarbazole Residue as High‐Affinity Hybridization Probes for Thiopyrimidine‐Containing Sequences
Authors: Kotammagari Tharun K. , Tähtinen Petri , Lönnberg Tuomas 
Published: September 2022

AbstractShort oligonucleotides incorporating either 1‐mercuri‐6‐phenylcarbazole, 8‐mercuri‐6‐phenylcarbazole, or 1,8‐dimercuri‐6‐phenylcarbazole C‐nucleoside in the middle of the chain have been synthesized and studied for their potential as hybridization probes for sequences containing thiopyrimidine nucleobases. All of these oligonucleotides formed very stable duplexes with complementary sequences pairing the organometallic moiety with either 2‐ or 4‐thiothymine. The isomeric monomercurated oligonucleotides were also able to discriminate between 2‐ and 4‐thiothymine based on the different melting temperatures of the respective duplexes. DFT‐optimized structures of the most stable mononuclear HgII‐mediated base pairs featured a coordinated covalent bond between HgII and either S2 or S4 and a hydrogen bond between the carbazole nitrogen and N3. The dinuclear HgII‐mediated base pairs, in turn, were geometrically very similar to the one previously reported to form between 1,8‐dimercuri‐6‐phenylcarbazole and thymine and had one HgII ion coordinated to a thio and the other one to an oxo substituent.
Interface Engineering of Conjugated Polymer‐Based Composites for Photocatalysis
Authors: Xiao Ziheng , Xiao Jie , Sun Qian , Wang Yifan , Pan Lun , Shi Chengxiang , Zhang Xiangwen , Zou Ji‐Jun 
Published: September 2022

AbstractPhotocatalysis can create a green way to produce clean energy resources, degrade pollutants and achieve carbon neutrality, making the construction of efficient photocatalysts significant in solving environmental issues. Conjugated polymers (CPs) with adjustable band structures have superior light‐absorption capacity and flexible morphology that facilitate contact with other components to form advanced heterojunctions. Interface engineering can strengthen the interfacial contact between the components and further enlarge the interfacial contact area, enhance light absorption, accelerate charge transfer and improve the reusability of the composites. In order to throw some new light on heterojunction interface regulation at a molecular level, herein we summarize CP‐based composites with improved photocatalytic performance according to the types of interactions (covalent bonding, hydrogen bonding, electrostatic interactions, π‐π stacking, and other polar interactions) between the components and introduce the corresponding interface building methods, identifying techniques. Then the roles of interfaces in different photocatalytic applications are discussed. Finally, we sum up the existing problems in interface engineering of CP‐based composites and look forward to the possible solutions.
Infusion of Variable Chemical Structure to Tune Stacking among Metal‐Organic Layers in 2D Nano MOFs
Authors: Manna Biplab , Yokoi Hiroyuki , Yamashita Akihiro , Sato Shota , Ohyama Junya , Kunitake Masashi , Ida Shintaro 
Published: September 2022

AbstractInvited for the cover of this issue is the group of Biplab Manna at the University of Kumamoto. The image depicts various kinds of stacking between the metal–organic layers of MOFs. Read the full text of the article at 10.1002/chem.202201665.
Association between serum cystatin C and early impairment of cardiac function and structure in type 2 diabetes patients with normal renal function
Authors: Huang Zhuoshan , Zhong Junlin , Zhang Shaozhao , Xiong Zhenyu , Huang Yiquan , Liu Menghui , Lin Yifen , Zhong Xiangbin , Ye Xiaomin , Zhuang Xiaodong , Liao Xinxue 
Published: September 2022

AbstractBackgroundType 2 diabetes mellitus (T2DM) patients may have cardiac remodeling and dysfunction from the early stage of disease. This study aimed to determine the association between cystatin C (CysC) and early cardiac functional or structural impairment in T2DM patients without renal dysfunction.MethodsA total of 1135 T2DM patients without renal dysfunction and known heart diseases were included in our study. Cardiac function and structure were evaluated by echocardiography. Patients were diagnosed as left ventricular hypertrophy (LVH), impaired left ventricular (LV) diastolic function, and categorized into four different LV geometry patterns including normal, concentric remodeling, concentric hypertrophy, and eccentric hypertrophy.ResultsIn multivariate linear regression analyses, CysC was positively associated with interventricular septum, LV mass index, left atrial volume index, E/e' ratio, and negatively associated with Tissue Doppler e', E/A ratio (p < .05). As a continuous variable, increasing CysC levels were associated with prevalence of LVH (OR: 1.47, 95% confidence interval [CI]: 1.22–1.77), impaired LV diastolic function (OR: 1.58, 95% CI: 1.33–1.87), concentric hypertrophy (OR: 1.54, 95% CI: 1.23–1.93) and eccentric hypertrophy (OR: 1.34, 95% CI: 1.00–1.80) according to multivariate logistic regression analyses. While as a categorical variable, the highest CysC quartile (CysC > 1.04 mg/L) was associated with LVH (OR: 2.95, 95% CI: 1.74–5.00), impaired LV diastolic function (OR: 4.09, 95% CI: 2.54–6.60), and concentric hypertrophy (OR: 3.26, 95% CI: 2.05–5.18).ConclusionsCysC was significantly associated with early LV remodeling and cardiac functional impairment in T2DM patients with normal renal function. It could be a reliable and convenient biomarker detecting early impairment of cardiac function and structure in T2DM patients.
7H‐Pyrrolo[2,3‐d]pyrimidine‐4‐amines as Potential Inhibitors of Plasmodium falciparum Calcium‐Dependent Protein Kinases
Authors: Seanego Tswene D. , Chavalala Hlamulo E. , Henning Hendrik H. , de Koning Charles B. , Hoppe Heinrich C. , Ojo Kayode K. , Rousseau Amanda L. 
Published: September 2022

AbstractA series of pyrrolo[2,3‐d]pyrimidines were designed in silico as potential bumped kinase inhibitors targeting P. falciparum calcium dependent protein kinase 4 (PfCDPK4), with the potential to inhibit PfCDPK1 based on earlier studies of the two kinases. A small series of these compounds were prepared and assessed for inhibitory activity against PfCDPK4 and PfCDPK1 in vitro. Four of the compounds displayed promising inhibitory activity against either PfCDPK4 (IC50=0.210–0.530 μM), or PfCDPK1 (IC50=0.589 μM). These data will enable optimisation of the molecular model to better predict inhibitory activity against PfCDPK4.
Interventions to increase racial and ethnic minority accrual into cancer clinical trials: A systematic review
Authors: Nouvini Rosa , Parker Patricia A. , Malling Charlotte D. , Godwin Kendra , Costas‐Muñiz Rosario 
Published: September 2022

BackgroundRacial and ethnic minorities (REMs) continue to be underrepresented in clinical trials despite the 1993 National Institutes of Health's Revitalization Act mandating the representation of women and underrepresented minority groups in clinical trials. Although Blacks represent 15% and Hispanics 13% of the cancer population, their clinical trial enrollment rates are disproportionately low at 4% to 6% and 3% to 6%, respectively. A systematic review exploring interventions aimed at improving cancer clinical trial (CCT) enrollment for REMs was conducted.MethodsA systematic search of PubMed, Cochrane CENTRAL, and Ovid PsycINFO was conducted for English‐language studies since 1993. Inclusion criteria included peer‐reviewed, US‐based studies with interventions aimed to recruit underrepresented minority adult patients into cancer clinical trials. REM groups were defined as Black, Hispanic, Asian, American Indian, and Native Hawaiian/other Pacific Islander.ResultsThe systematic search identified 3123 studies, of which nine met inclusion criteria. Interventions included patient navigation/coaching (n = 4), a clinical trial educational video (n = 2), institutional research infrastructure changes (n = 1), a relationship building and social marketing recruitment model (n = 1), and cultural competency training for providers (n = 1). A statistically significant improvement in accrual was shown in three of the patient navigation interventions, one of the clinical trial educational videos and an institutional research infrastructure change.ConclusionsThis systematic review illustrates several potential mechanisms by which to increase CCT recruitment for patients of REM backgrounds in various clinical settings. More randomized controlled trials are needed to further explore the benefits of these interventions for REMs.
Oncological and functional outcomes of men undergoing primary whole gland cryoablation of the prostate: A 20‐year experience
Authors: Tan Wei Phin , Kotamarti Srinath , Chen Emily , Mahle Rachael , Arcot Rohith , Chang Andrew , Ayala Alexandria , Michael Zoe , Seguier Denis , Polascik Thomas J. 
Published: September 2022

BackgroundThis study reports the oncological and functional outcomes in men with localized prostate cancer (Pca) who were treated with primary whole gland cryoablation (WGC) of the prostate.MethodsThe authors retrospectively reviewed their prospectively collected cryosurgery database between January 2002 and September 2019 for men who were treated with WGC of the prostate at a tertiary referral center. Primary outcome includes biochemical recurrence‐free survival (BRFS). Secondary outcomes include failure‐free survival (FFS), metastasis‐free survival (MFS) and adverse events.ResultsA total of 260 men were included in the study. Men having had prior treatment for Pca were excluded. Median follow‐up was 107 months (interquartile range [IQR], 68.3–132.5 months). BRFS, FFS, and MFS at 10 years were 84%, 66%, and 96%, respectively. High risk D'Amico classification was associated with a lower BRFS and FFS on multivariable analysis. No patient had any Pca‐related death during follow‐up. American Urological Association symptoms score and bother index were unchanged following cryoablation. Median International Index of Erectile Function score precryoablation and post‐cryoablation was 7 (IQR, 3–11) and 1 (IQR, 1–5), respectively. Stress urinary incontinence, defined as requiring any protective pads only occurred in five patients (2%). No patient developed a fistula. Grade > 2 Clavien‐Dindo adverse events occurred in six (2.3%) patients.ConclusionWGC of the prostate can achieve excellent oncological and functional outcomes in men with localized Pca at the 10‐year mark. Primary WGC may be a good option for men who desire to preserve urinary continence and have an excellent oncologic outcome.Lay summary

Primary whole gland cryoablation is an alternative treatment option to radical prostatectomy and radiotherapy for men with organ‐confined prostate cancer.

Patients had excellent cancer outcomes 1 years after whole gland cryoablation, and patients with PSA nadir 0.1 ng/ml or lower after treatment were less likely to have disease recurrence.
Blockchain‐based security enhancement mechanism for employee performance assessment system
Authors: Vignesh Ramamoorthi , Prasad Kulasekaran Mohana 
Published: September 2022

SummaryIn the proposed approach, the blockchain based employee performance assessment system is introduced to enhance the security and privacy of employee data. The proposed three phases are used to enhance the security mechanism in the employee performance assessment system: authentication, encryption, and data retrieval phase. The authentication process is performed in the first phase by utilizing Lamport Merkle digital signature (LMDS) algorithm. The LMDS algorithm generates and verifies a digital ID for each employee. In the next phase blockchain based encryption is carried on employee data using the new light weight cryptography algorithm (NLCA), which uses a 16 bytes (128 bit) block cipher and needs 16 bytes (128‐bit) key to encrypt the data. At last, the data retrieval phase allows users to access the data through the secret key. Proposing a modified Diffie‐Hellman (ReDH) algorithm to exchange the secret key to ensure security. The proposed approach is implemented in the Python platform, and the performance of the proposed approach is compared with existing methods in terms of encryption time, throughput, decryption time, storage efficiency, and search time. Using a blockchain‐based employee performance assessment system enhances system trust level, transparency, accountability, and security efficiency.
Understanding the Surprising Oxidation Chemistry of Au−OH Complexes
Authors: Engbers Silène , Klein Johannes E. M. N. 
Published: September 2022

AbstractAu is known to be fairly redox inactive (in catalysis) and bind oxygen adducts only quite weakly. It is thus rather surprising that stable Au−OH complexes can be synthesized and used as oxidants for both one‐ and two‐electron oxidations. A charged AuIII−OH complex has been shown to cleave C−H and O−H bonds homolytically, resulting in a one‐electron reduction of the metal center. Contrasting this, a neutral AuIII−OH complex performs oxygen atom transfer to phosphines, resulting in a two‐electron reduction of the hydroxide proton to form a AuIII−H rather than causing a change in oxidation state of the metal. We explore the details of these two examples and draw comparisons to the more conventional reactivity exhibited by AuI−OH. Although the current scope of known Au−OH oxidation chemistry is still in its infancy, the current literature exemplifies the unique properties of Au chemistry and shows promise for future findings in the field.
Metabolic Tumor Imaging with Rapidly Signal‐Enhanced 1‐13C‐Pyruvate‐d3
Authors: Hune Theresa , Mamone Salvatore , Schroeder Henning , Jagtap Anil P. , Sternkopf Sonja , Stevanato Gabriele , Korchak Sergey , Fokken Claudia , Müller Christoph A. , Schmidt Andreas B. , Becker Dorothea , Glöggler Stefan 
Published: September 2022

AbstractThe metabolism of malignant cells differs significantly from that of healthy cells and thus, it is possible to perform metabolic imaging to reveal not only the exact location of a tumor, but also intratumoral areas of high metabolic activity. Herein, we demonstrate the feasibility of metabolic tumor imaging using signal‐enhanced 1‐13C‐pyruvate‐d3, which is rapidly enhanced via para‐hydrogen, and thus, the signal is amplified by several orders of magnitudes in less than a minute. Using as a model, human melanoma xenografts injected with signal‐enhanced 1‐13C‐pyruvate‐d3, we show that the conversion of pyruvate into lactate can be monitored along with its kinetics, which could pave the way for rapidly detecting and monitoring changes in tumor metabolism.