DataSheet1_Clinical Effectiveness of Conservative Treatments on Lumbar Spinal Stenosis: A Network Meta-Analysis.docx

Objective: To systematically evaluate the clinical effectiveness of conservative treatments including pharmacological treatments and nonpharmacological treatments on patients with lumbar spinal stenosis.Methods: We searched six electronic databases systematically for randomized clinical trials published between January 2000 and July 2021, including the China National Knowledge Infrastructure, WanFang Data, PubMed, MEDLINE, Embase, and the Cochrane library. The studies focused on the therapeutic effects of pharmacological treatments including calcitonin, antiepileptics, neurotrophic drugs, nonsteroidal anti-inflammatory drugs, Chinese Traditional Medicine, limaprost, and nonpharmacological treatments like physiotherapy for treating lumbar spinal stenosis were included. The outcome was measured using the visual analog scale, Oswestry Dysfunction Index, Japanese Orthopaedic Association Score, and EuroQol Five Dimensions Questionnaire. The quality of eligible studies was assessed by using the Cochrane recommended bias risk assessment tool. Stata was used to conduct the network meta-analysis.Results: A total of 12 randomized control trials with 1,194 patients were included. The network meta-analysis showed that for the visual analog scale, a better therapeutic effect was noted while using Chinese Traditional Medicine and physiotherapy, followed by analgesics drugs and limaprost. Limaprost and calcitonin were better in decreasing the Oswestry Dysfunction Index. In terms of the Japanese Orthopaedic Association Score, the use of traditional Chinese Medicine and limaprost were associated with a better improvement than other treatments. Meanwhile, limaprost combined with analgesics drugs was found to be effective to improve the EuroQol Five Dimensions Questionnaire.Conclusion: Among the commonly used conservative treatments for the treatment of lumbar spinal stenosis, limaprost may have better efficacy in improving the Japanese Orthopaedic Association Score and decreasing the Oswestry Dysfunction Index, with a beneficial effect on decreasing the visual analog scale and improving the EuroQol Five Dimensions Questionnaire.Systematic Review Registration: website, identifier registration number.</p

PKU-9: An Aluminogermanate with a New Three-Dimensional Zeolite Framework Constructed from <b>CGS</b> Layers and <i>Spiro</i>-5 Units

PKU-9: An Aluminogermanate with a New Three-Dimensional Zeolite Framework Constructed from CGS Layers and Spiro-5 Unit

PKU-9: An Aluminogermanate with a New Three-Dimensional Zeolite Framework Constructed from <b>CGS</b> Layers and <i>Spiro</i>-5 Units

PKU-9: An Aluminogermanate with a New Three-Dimensional Zeolite Framework Constructed from CGS Layers and Spiro-5 Unit

Crystal Growth and Structure Determination of Oxygen-Deficient Sr₆Co₅O₁₅

Large single crystals of oxygen-deficient Sr6Co5O15-δ compounds, i.e., Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36, were obtained by using K2CO3 flux in the presence of additives of transition metal oxides. The single-crystal structure determination shows that the structures of Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36 crystallize in the space group R3̄ and can be described as one-dimensional face-sharing CoO3 polyhedral chains and Sr cation chains. Unlike the other known 2H-perovskite-related oxides in which the polyhedral chains consist of octahedra (Oh) and trigonal prism (TP), the structure of Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36 contain Oh and intermediate polyhedra (IP) and can be attributed to a general structure formula A6A‘2B3O15-δ, which is closely related to the known A6A‘B4O15 phases by shifting of a B atom and the O3 triangle along the c axis. Further study on O3 reveals that this oxygen position splits into two independent positions, corresponding to polyhedral geometry of IP and TP, respectively. Therefore, the polyhedral chain in the structure should be more precisely described as a random composite of the 4Oh + TP and 3Oh + 2IP. This model is used to interpret the magnetic properties, although not quantitatively. The 4-D structure analysis was also conducted for both Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36 with a commensurate modulated structure in a 4-D superspace group, R3̄m(00γ)0s, γ = p/k = 3/5. By considering the same 4-D superspace group R3̄m(00γ)0s but different t-phases, one can understand the structure relationship between Sr6Co5O14.70 and Sr6Rh5O15

Bismuth Borates: One-Dimensional Borate Chains and Nonlinear Optical Properties

Three bismuth borates, Bi[B4O6(OH)2]OH (I), BiB2O4F (II), and Bi3[B6O13(OH)] (III), were obtained in boric acid flux at low temperatures and their structures were determined by using single-crystal and powder X-ray diffraction techniques. All these three bismuth borates contain one-dimensional borate chains and crystallize in noncentrosymmetric space groups. I is a hydrated borate, crystallizing in the space group P1 with lattice constants a = 4.300(1) Å, b = 8.587(2) Å, c = 10.518(2) Å, α = 113.11(3)°, β = 100.50(3)°, and γ = 90.36(3)°, and the borate chain consists of a 3-ring (2BO3 + BO4) and a BO3 group. II is a fluoroborate, which crystallizes in the trigonal space group P32 with a = 6.7147(1) Å and c = 6.4688(1) Å, and the borate anion is a 3-fold helix chain formed by extensive linkage of three-membered borate rings (3BO4). III is also a hydrated borate with a structure that is closely related to II, in which one-sixth of the borate groups are in triangular geometry (BO3), which reduces the symmetry to P1, a = 6.6257(1) Å, b =6.6238(1) Å, c = 6.6541(1) Å, and α = 89.998(3)°, β = 89.982(2)°, and γ = 119.992(2)°. All these three bismuth borates exhibit nonlinear optical (NLO) properties

Crystal Growth and Structure Determination of Oxygen-Deficient Sr₆Co₅O₁₅

Large single crystals of oxygen-deficient Sr6Co5O15-δ compounds, i.e., Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36, were obtained by using K2CO3 flux in the presence of additives of transition metal oxides. The single-crystal structure determination shows that the structures of Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36 crystallize in the space group R3̄ and can be described as one-dimensional face-sharing CoO3 polyhedral chains and Sr cation chains. Unlike the other known 2H-perovskite-related oxides in which the polyhedral chains consist of octahedra (Oh) and trigonal prism (TP), the structure of Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36 contain Oh and intermediate polyhedra (IP) and can be attributed to a general structure formula A6A‘2B3O15-δ, which is closely related to the known A6A‘B4O15 phases by shifting of a B atom and the O3 triangle along the c axis. Further study on O3 reveals that this oxygen position splits into two independent positions, corresponding to polyhedral geometry of IP and TP, respectively. Therefore, the polyhedral chain in the structure should be more precisely described as a random composite of the 4Oh + TP and 3Oh + 2IP. This model is used to interpret the magnetic properties, although not quantitatively. The 4-D structure analysis was also conducted for both Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36 with a commensurate modulated structure in a 4-D superspace group, R3̄m(00γ)0s, γ = p/k = 3/5. By considering the same 4-D superspace group R3̄m(00γ)0s but different t-phases, one can understand the structure relationship between Sr6Co5O14.70 and Sr6Rh5O15

Crystal Growth and Structure Determination of Oxygen-Deficient Sr₆Co₅O₁₅

Large single crystals of oxygen-deficient Sr6Co5O15-δ compounds, i.e., Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36, were obtained by using K2CO3 flux in the presence of additives of transition metal oxides. The single-crystal structure determination shows that the structures of Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36 crystallize in the space group R3̄ and can be described as one-dimensional face-sharing CoO3 polyhedral chains and Sr cation chains. Unlike the other known 2H-perovskite-related oxides in which the polyhedral chains consist of octahedra (Oh) and trigonal prism (TP), the structure of Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36 contain Oh and intermediate polyhedra (IP) and can be attributed to a general structure formula A6A‘2B3O15-δ, which is closely related to the known A6A‘B4O15 phases by shifting of a B atom and the O3 triangle along the c axis. Further study on O3 reveals that this oxygen position splits into two independent positions, corresponding to polyhedral geometry of IP and TP, respectively. Therefore, the polyhedral chain in the structure should be more precisely described as a random composite of the 4Oh + TP and 3Oh + 2IP. This model is used to interpret the magnetic properties, although not quantitatively. The 4-D structure analysis was also conducted for both Sr6Co5O14.70 and Sr6Co4.9Ni0.1O14.36 with a commensurate modulated structure in a 4-D superspace group, R3̄m(00γ)0s, γ = p/k = 3/5. By considering the same 4-D superspace group R3̄m(00γ)0s but different t-phases, one can understand the structure relationship between Sr6Co5O14.70 and Sr6Rh5O15

PKU-10: A New 3D Open-Framework Germanate with 13-Ring Channels

PKU-10, a germanate with the formula [(CH3)4N]3Ge11O19(OH)9, is synthesized under hydrothermal conditions, and its structure is determined by single-crystal X-ray diffraction data. PKU-10 possesses 3D intersected 13-ring channels and presents a new 6-connectedness linkage mode of the Ge7 cluster, T3P2O, forming a pcu topological network. Each Ge7 cluster is, in fact, surrounded by eight Ge7 clusters in a nearly perfect cube because the hydrogen bonds between Ge7 clusters are also taken into account. The structure-directing agent tetramethylammonium (TMA+) ions, locating in the channels, can be partially exchanged by Li+ with retention of the germanate framework. The germanate framework collapses with decomposition of the TMA+ ions at temperatures higher than 240 °C

Bismuth Borates: Two New Polymorphs of BiB₃O₆

Two new polymorphs of BiB3O6 were identified at low temperatures using boric acid as a flux. Unlike α-BiB3O6, which crystallizes in a noncentrosymmetric space group and, thus, shows exceptional nonlinear optical (NLO) properties, β-BiB3O6 (I) and γ-BiB3O6 (II) crystallize in the centrosymmetric space group P21/n with the following lattice parameters:  a = 14.1664(1), b = 6.7514(1), c = 4.4290(1) Å, β = 102.125(1)° for I; and a = 8.4992(1), b = 11.7093(1), c = 4.2596(1) Å, β = 121.141(1)° for II. However, from the structural point of view, the three polymorphs of BiB3O6 are closely related. The structure of β-BiB3O6 (I) contains a 2-dimensional borate layer, which could be considered to be an intralayered additive product of α-BiB3O6. On the other hand, the 3-dimensional borate framework in γ-BiB3O6 (II) could be considered to be an interlayered additive product of β-BiB3O6 (I). According to the synthesis experiments and calculated density, it is proposed that compounds I and II should be the low-temperature (high-pressure) polymorphs of BiB3O6