An unusually large magnetocaloric effect for the temperature region below 10 K is found for the Fe14 molecular nanomagnet. This is to large extent caused by its extremely large spin S ground state combined with an excess of entropy arising from the presence of low-lying excited S states. We also show that the highly symmetric Fe14 cluster core, resulting in small cluster magnetic anisotropy, enables the occurrence of long-range antiferromagnetic order below TN=1.87K.

/pdf/spin-enhanced-magnetocaloric-effect-in-molecular-nanomagnets-5b1mjop503.pdf

Spin-enhanced Magnetocaloric Effect in Molecular Nanomagnets

Recent advances in small-molecule fluorescent probes for diagnosis of cancer cells/tissues

Molecule fluorescent probes for sensing and imaging analytes in plants: Developments and challenges

Design, synthesis, biological evaluation, and docking study of chromone-based phenylhydrazone and benzoylhydrazone derivatives as antidiabetic agents targeting α-glucosidase.

Magnetic refrigeration property and slow magnetic relaxation behavior of five dinuclear Ln(III)-based compounds

Aberrant expression of estrogen receptor β (ERβ) and tumor hypoxia have been observed in castration-resistant prostate cancer (CRPC); therefore, hypoxia-responsive labeling of ERβ will be beneficial for the early diagnosis and treatment of CRPC. Herein, we report the first ERβ-targeted hypoxia-responsive near-infrared fluorescent probes, which showed superior ERβ selectivity and favorable optical properties. These two probes exhibited excellent hypoxia responsiveness and specific mitochondrial ERβ imaging ability in CRPC cells. In addition, P1 displayed strong anti-interference ability and good tumor imaging capacity in vivo, contributing to effective diagnosis of CRPC. Mechanistic studies, including high resolution mass spectrometry (HRMS) and density functional theory (DFT) calculations, showed that the introduction of a nitro group quenched the probe fluorescence by inducing a PET effect, while in the hypoxic tumor microenvironment, reduction of the nitro group blocked the PET effect and turned on the probe fluorescence. These novel ERβ-targeted hypoxia-responsive near-infrared fluorescent probes may promote the study of prostate cancer. 

Estrogen receptor β-targeted hypoxia-responsive near-infrared fluorescence probes for prostate cancer study.

To investigate the effect of oral carbohydrate at 2 h before elective cesarean section on postoperative recovery indicators such as the time to colostrum and vaginal bleeding.

The effect of preoperative oral carbohydrate on the time to colostrum and amount of vaginal bleeding after elective cesarean section

Abstract Background Decreasing the anaesthesia preparation time for primiparas experiencing painful uterine contractions is clinically relevant. This prospective intervention study investigated the effect of various educational methods conducted at different times on body positioning for primiparas undergoing labour analgesia. Methods Ninety primiparas who were about to receive labour analgesia were randomly divided into a verbal instruction group, a photo instructions group, and an educational video group for immediate education, and 60 primiparas who were willing to receive labour analgesia but were not in labour were randomly divided into a photo instruction group and an educational video group for advance education. The times required for body positioning were compared. Results In the immediate education cohort, the body positioning time in the verbal group (50.48 ± 28.97 s) was significantly longer than those in the photo group (30.47 ± 6.94 s) and the video group (23.14 ± 9.74 s) ( P = 0.00). In the advance education cohort, the time in the photo group (17.47 ± 6.48 s) was longer than that in the video group (13.71 ± 7.01 s) ( P = 0.042). Whether photos or videos are used, advance education can significantly decrease body positioning time. Conclusions Video or photo education for primiparas who are about to receive labour analgesia can decrease the body positioning time and is more effective when provided in advance. 

/pdf/the-effectiveness-of-different-education-methods-conducted-27b0wzof.pdf

The effectiveness of different education methods conducted at different times for decreasing the time required for a parturient to position herself for epidural placement

Four tetranuclear lanthanide clusters: {[Gd4(L1)6(tmhd)4(μ3-OH)2]·2CH3CN} (1), {[Tb4(L1)6(tmhd)4(μ3-OH)2]·4CH3CN} (2), {[Dy4(L1)6(tmhd)4(μ3-OH)2]·CH3CN} (3) and {[Gd4(L2)6(tmhd)4(μ3-OH)2]·8CH3CN·2CH2Cl2} (4) were fabricated by employing two Schiff based ligands (HL1 = 5-((4-ethylbenzylidene)amino)quinolin-8-ol and HL2 = 5-(([1,1′-biphenyl]-4-ylmethylene)amino)quinolin-8-ol). Interestingly, the cores of compounds 1–4 are nearly structurally identical. The core of the compounds contains a tetranuclear arrangement of LnIII ions, which is held together by two pyramidal μ3-OH− ions and six μ2 phenol hydroxyl oxygen atoms derived from six ligands. Magnetic studies indicated that 1 and 4 exhibit a cryogenic magnetic refrigeration property (maximum −ΔSm = 18.02 J K−1 kg−1 for 1, and 15.47 J K−1 kg−1 for 4, ΔH = 7 T at 2.0 K), whereas compound 3 exhibits a slow relaxation of magnetization with an energy barrier (Ueff/kB) of 83.1 K and τ0 = 4.18 × 10−8 s.

Single molecule magnet behavior and magnetic refrigeration of four tetranuclear lanthanide (Ln = GdIII, TbIII, DyIII) clusters

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Estrogen receptor β-targeted hypoxia-responsive near-infrared fluorescence probes for prostate cancer study.

The effect of preoperative oral carbohydrate on the time to colostrum and amount of vaginal bleeding after elective cesarean section

The effectiveness of different education methods conducted at different times for decreasing the time required for a parturient to position herself for epidural placement

Single molecule magnet behavior and magnetic refrigeration of four tetranuclear lanthanide (Ln = GdIII, TbIII, DyIII) clusters