Find research datasets worth reusing

Soil magnesium: Long-Term Nitrogen Deposition: Population, Community, and Ecosystem Consequences

The purpose of this experiment is to measure how adding nitrogen over a long time will affect the number of species, the type of species present, the amount of annual growth, and the change from year to year in the growth of each species in a plant community which is also relieved of grazing by large and small mammals. The experiment is being conducted within fields (A, B, C, and D) which were initially low in soil nutrients. There are 8 different levels of nitrogen addition with other nutrients added to ensure that nitrogen remains the limiting nutrient, and a control which receives no nutrients. There are 6 replicates of the 9 treatments in fields A, B, and C and 5 replicates in field D. The treatments were randomly assigned to the plots. In fields A, B, and C the plots are in 6 by 9 grids and are 4 by 4 meters in size with 1 meter aisles between plots. In field D the plots are 1.5 by 4 meters and are placed in a 3 by 17 grid. The plots are enclosed by a fence to keep out mammalian herbivores. Gophers are trapped and removed as they appear. Nitrogenfertilizer (NH4NO3) is applied twice per year, once in early May and once in late June. This experiment was begun in 1982 by David Tilman.

Soil magnesium: Long-Term Nitrogen Deposition During Grassland Succession

The purpose of this experiment is to measure how initially disturbing an area and adding nitrogen over a long time will affect the number of species, the type of species present, the amount of annual growth, and the change from year to year in the growth of each species in a plant community which is also relieved of grazing by large and small mammals. This experiment is conducted within fields (A, B, and C) which were initially low in soil nutrients. The ground was disturbed by thoroughly disking the area prior to establishment of the experiment. There are 8 different levels of nitrogen addition with other nutrients added to ensure that nitrogen remains the limiting nutrient, and a control which receives no nutrients. Nitrogen fertilizer (NH4NO3) is applied twice per year, once in early May and once in late June. There are six replicates of each treatment per field. The treatments were randomly assigned to plots of size 4 by 4 meters. The plots are in 6 plot by 9 plot grids with 1 meter aisles between plots. The plot grids are enclosed by a fence to keep out mammalian herbivores. Gophers are trapped and removed as they appear. In the spring of 1992, subexperiments E097 and E098 were established. E097 is in fields A and C where randomly selected plots within each treatment no longer receive fertilizer. E098 is in field B where randomly selected plots within each treatment are burned. Note that the design of E002 is similar to E001 except E002 was thoroughly disked prior to establishment.

Soil magnesium: Effect of Burning Patterns on Vegetation in the Fish Lake Burn Compartments

This study examines the effects of long-term prescribed burning treatments on vegetation structure and composition, productivity, and nutrient cycling in upland oak savanna and woodland vegetation. The basis for the study is an ongoing, experimental prescribed burning program begun in 1964 at Cedar Creek, and a similar program operating since 1962 on the adjacent Helen Allison Savanna property (owned by The Nature Conservancy). These prescribed burning programs are designed to subject upland oak communities (and some old fields) to different burn frequencies and patterns of burning, with the ultimate objectives of 1) restoring and maintaining the historically important savanna and open woodland vegetation, and 2) providing information about the effects of different burning patterns on vegetation structure and composition. This study addresses the latter of these two purposes and expands on it by also investigating possible influences of fire on resource availability (nutrients, water, and light) and net primary productivity. This study represents a continuation and expansion of experiments 015 and 094.

Soil magnesium: Nitrogen Addition and Dynamics of Recovery from Cessation of N Addition

This experiment was established on top of E002 in fields A and C. In the spring of 1992, 3 randomly chosen replicates of each nutrient treatment of experiment E002 were chosen to receive no more fertilizer. For a description of these plots, see E002. For a description of fertilizer added to E097, see file fertilization details. For a list of treatments, see the treatment layouts in file trmte97.

Soil magnesium: Fire X Nitrogen: Interactive Effects in a Prairie-Like Grassland

This experiment was established on top of E002 in field B. In the spring of 1992, 3 randomly chosen replicates of each nutrient treatment of experiment E002 were chosen to be burned each spring. For a description of these plots, see E002. For a list of treatments, see the treatment layouts in file trmte98.

Soil magnesium: Herbivory by Nitrogen Interactive Effects on Community and Ecosystem Processes and Dynamics

E172 is an herbivory experiment established by Dave Tilman in fall 2004 by enclosing in deer fences three randomly selected plots from the six replicates of each control and each treatment in the N addition E001 experiment in field C. These plots still receive the nutrient treatments prescribed in the Experiment 001 protocols. From 1982-2004 a fence containing all of e001 plots in Field C was designed to exclude deer and all small mammals, including mice, voles and pocket gophers. This fence was removed in Fall of 2004 and individual plots designated for e172 were enclosed in deer fences. The purpose of E001 was to measure how adding nitrogen over a long time would affect the number of species, the type of species present, the amount of annual growth, and the change from year to year in the growth of each species in a plant community which is also relieved of grazing by large and small mammals. There are 8 different levels of nitrogen addition with other nutrients added to ensure that nitrogen remains the limiting nutrient, and a control which receives no nutrients. The plots are in a 6 by 9 grid and are 4 by 4 meters in size with 1 meter aisles between plots. Nitrogen fertilizer (NH4NO3) is applied twice per year, once in early May and once in late June.

opencc-by-4.0Jun 2020View details →

Dataset for: "Dipentamethylene Thiuram Tetrasulfide Based Cathodes for Rechargeable Magnesium Batteries"

Dataset for computational contributions to paper with DOI: 10.1021/acsaem.0c01655 data-structure:  . ├── bondstrengths │   ├── 1 │   │   ├── left │   │   │   └── output │   │   │       ├── CONTCAR │   │   │       ├── INCAR │   │   │       ├── KPOINTS │   │   │       ├── OUTCAR │   │   │       └── POSCAR │   │   └── right │   │       └── output -> ../../7/right/output/ │   ├── 2 │   │   ├── left │   │   │   └── output │   │   │       ├── CONTCAR │   │   │       ├── INCAR │   │   │       ├── KPOINTS │   │   │       ├── OUTCAR │   │   │       └── POSCAR │   │   └── right_quasi_newton │   │       └── output │   │           ├── CONTCAR │   │           ├── INCAR │   │           ├── KPOINTS │   │           ├── OUTCAR │   │           └── POSCAR │   ├── 3 │   │   ├── left │   │   │   └── output │   │   │       ├── CONTCAR │   │   │       ├── INCAR │   │   │       ├── KPOINTS │   │   │       ├── OUTCAR │   │   │       └── POSCAR │   │   └── right │   │       └── output │   │           ├── CONTCAR │   │           ├── INCAR │   │           ├── KPOINTS │   │           ├── OUTCAR │   │           └── POSCAR │   ├── 4 │   │   ├── left │   │   │   └── output │   │   │       ├── CONTCAR │   │   │       ├── INCAR │   │   │       ├── KPOINTS │   │   │       ├── OUTCAR │   │   │       └── POSCAR │   │   └── right │   │       └── output │   │           ├── CONTCAR │   │           ├── INCAR │   │           ├── KPOINTS │   │           ├── OUTCAR │   │           └── POSCAR │   ├── 5 │   │   ├── left │   │   │   └── output │   │   │       ├── CONTCAR │   │   │       ├── INCAR │   │   │       ├── KPOINTS │   │   │       ├── OUTCAR │   │   │       └── POSCAR │   │   └── right │   │       └── output │   │           ├── CONTCAR │   │           ├── INCAR │   │           ├── KPOINTS │   │           ├── OUTCAR │   │           └── POSCAR │   ├── 6 │   │   ├── left │   │   │   └── output │   │   │       ├── CONTCAR │   │   │       ├── INCAR │   │   │       ├── KPOINTS │   │   │       ├── OUTCAR │   │   │       └── POSCAR │   │   └── right │   │       └── output │   │           ├── CONTCAR │   │           ├── INCAR │   │           ├── KPOINTS │   │           ├── OUTCAR │   │           └── POSCAR │   └── 7 │       ├── left │       │   └── output │       │       ├── CONTCAR │       │       ├── INCAR │       │       ├── KPOINTS │       │       ├── OUTCAR │       │       └── POSCAR │       └── right │           └── output │               ├── CONTCAR │               ├── INCAR │               ├── KPOINTS │               ├── OUTCAR │               └── POSCAR └── other     ├── MgPMDTC2     │   └── output     │       ├── CONTCAR     │       ├── INCAR     │       ├── KPOINTS     │       ├── OUTCAR     │       └── POSCAR     ├── Mg_atom     │   └── output     │       ├── CONTCAR     │       ├── INCAR     │       ├── KPOINTS     │       ├── OUTCAR     │       └── POSCAR     ├── PMTT     │   ├── output_HOMO_LUMO_isosurface     │   │   ├── CONTCAR     │   │   ├── INCAR     │   │   ├── KPOINTS     │   │   ├── OUTCAR     │   │   ├── PARCHG.0057.ALLK     │   │   ├── PARCHG.0058.ALLK     │   │   ├── POSCAR     │   │   └── PROCAR     │   └── output_geometric_relaxation     │       ├── CONTCAR     │       ├── INCAR     │       ├── KPOINTS     │       ├── OUTCAR     │       ├── POSCAR     │       └── PROCAR     └── S2         └── output             ├── CONTCAR             ├── INCAR             ├── KPOINTS             ├── OUTCAR             └── POSCAR 46 directories, 94 files

dryad32/100

Data from: Limitation of seedling growth by potassium and magnesium supply for two ectomycorrhizal tree species of a Central African rain forest and its implication for their recruitment

In the ectomycorrhizal caesalpiniaceous groves of southern Korup National Park, the dominant tree species, Microberlinia bisulcata, displays very poor in situ recruitment compared with its codominant, Tetraberlinia bifoliolata. The reported ex situ experiment tested whether availabilities of soil potassium and magnesium play a role. Seedlings of the two species received applications of K and Mg fertilizer in potted native soil in a local shade house, and their responses in terms of growth and nutrient concentrations were recorded over 2 years. Amended soil concentrations were also determined. Microberlinia responded strongly and positively in its growth to Mg, but less to K; Tetraberlinia responded weakly to both. Added Mg led to strongly increased Mg concentration for Microberlinia while added K changed that concentration only slightly; Tetraberlinia strongly increased its concentration of K with added K, but only somewhat its Mg concentration with added Mg. Additions of Mg and K had small but important antagonistic effects. Microberlinia is Mg-demanding and apparently Mg-limited in Korup soil; Tetraberlinia, whilst K-demanding, appeared not to be K-limited (for growth). Added K enhanced plant P concentrations of both species. Extra applied Mg may also be alleviating soil aluminum toxicity, and hence improving growth indirectly and especially to the benefit of Microberlinia. Mg appears to be essential for Microberlinia seedling growth and its low soil availability in grove soils at Korup may be an important contributing factor to its poor recruitment. Microberlinia is highly shade-intolerant and strongly light-responding, whilst Tetraberlinia is more shade-tolerant and moderately light-responding, which affords an interesting contrast with respect to their differing responses to Mg supply. The study revealed novel aspects of functional traits and likely niche-partitioning among ectomycorrhizal caesalps in African rain forests. Identifying the direct and interacting indirect effects of essential elements on tropical tree seedling growth presents a considerable challenge due the complex nexus of causes involved.

opencc-zeroDec 2014View details →

opencc-by-4.0Mar 2024View details →

Figure S1: Nutrient concentration of lettuce (Lactuca sativa 'Rex') plants grown at different total incident light levels in deep water culture hydroponics. Lines show multiple regression analysis results, indicating no significant interactions. Each data point represents one plant. N = nitrogen, P = phosphorus, K = potassium, Ca = calcium, Mg = magnesium, S = sulfur, B = boron, Cu = copper, Fe = iron, Mn = manganese, and Zn = zinc.

Open the record for dataset details and reuse information.

opencc-by-4.0Feb 2022View details →

RAW Data - Mechanical characterization for the severely processed FSPed WE54 magnesium alloy

The present data set present the raw data of the mechanical characterization of a WE54 magnesium alloy, processed by friction stir processing (FSP), using a refrigerated backing anvil. File names describe the kind and characteristics of each test as follows:  <ol> <li>All file names start by the initial temper of the WE54 magnesium alloy (T6 or TT) followed by the FSP processing conditions: first two digits are the rotation speed while the second two digits correspond to the advancing speed, both divided by a factor of 100.</li> <li>Files tagged at the end as _iUMI.opj correspond to the characterization by instrumented ultra-microindentation and provide a data matrix including prosition and hardness value (readable in Origin).</li> <li>Files tagged at the end as _CSRtt.opj correspond to the characterization by constant strain rate tensile test.</li> </ol>

dryad32/100

Facile synthesis of magnesium-based metal-organic framework with tailored nanostructure for effective VOCs adsorption

A novel Mg(II) metal–organic framework (Mg-MOF) was synthesised based on the ligand of 2,2'-bipyridine-4,4'dicarboxylic acid (Bpdc). Single-crystal X-ray structural analysis confirmed that 3D-nanostructure Mg-MOFs formed a monoclinic system with a channel size of 15.733 Å × 23.736 Å. The N2 adsorption isotherm, Fourier-transform infrared spectroscopy, thermogravimetric analysis and high-resolution transmission electron microscopy were performed to characterise the thermal stability and purity of the Mg-MOFs. The adsorption studies on four typical volatile organic compounds (VOCs) emitted during wood drying showed that Mg-MOFs have noteworthy adsorption capacities, especially for benzene and β-pinene with adsorptions of 182.26 mg/g and 144.42 mg/g, respectively. In addition, the adsorption of Mg-MOFs mainly occurred via natural adsorption, specifically, multi-layer physical adsorption, accompanied by chemical forces, which occurred in the pores where the VOCs molecules combined with active sites. As an adsorbent, Mg-MOFs exhibit versatile behaviour for toxic-gas accumulation.

opencc-zeroApr 2022View details →

opencc-by-4.0Aug 2022View details →

Magnesium isotope constraints on the Holocene hydromagnesite formation in alkaline Lake Dujiali, central Qinghai-Tibetan Plateau

This dataset contains the following nice Tables: 1. Table S-1 Mineralogical compositions of hydromagnesite and lake sediments. 2. Table S-2 Mg isotope and Sr data of Dujiali Lake. 3. Table S-3 Chemical compositions of waters in Dujiali lake.  4. Table S-4 The compilation of small rivers draining only ultramafic rocks. 5. Table S-5 The compilation of Mg/Ca ratios (mol/mol) of alkaline lakes in the world. 6. Table S-6 The compilation of δ 26Mg in river waters, groundwater, soil water and hydromagnesite. 7. Table S-7 The major elements compositions of lake sediments and hydromagensite. 8. Table S-8 Model input parameters. 9. Table S-9: Model parameters.

opencc-by-4.0May 2024View details →

Dataset for 'Aluminum and iron effects on the electrical conductivity of the dense hydrous magnesium silicate phase E'

This dataset include the raw data of impedance spectra of the 5 samples reported in 'Aluminum and iron effects on the electrical conductivity of the dense hydrous magnesium silicate phase E'. Reading the raw data may need the software 'CView' (http://www.scribner.com). The mossbauer spectra of two samples are also included.

opencc-by-4.0Jun 2024View details →

NMR Data - Densification of Sodium and Magnesium Aluminosilicate Glasses at Ambient Temperature

Open the record for dataset details and reuse information.

openJun 2024View details →

Data set for "Nucleation Mechanisms of Electrodeposited Magnesium on Metal Substrates"

This is the experimental raw data set associated with the following publication: M. Löw, F. Maroni, S. Zaubitzer, S. Dongmo, M. Marinaro, Nucleation Mechanisms of Electrodeposited Magnesium on Metal Substrates, Batteries & Supercaps 2024, e202400250. DOI: <a href="https://doi.org/10.1002/batt.202400250">10.1002/batt.202400250</a>

opencc-by-4.0Oct 2024View details →

reseach data for the paper RAPID METHOD FOR SCREENING OF BOTH CALCIUM AND MAGNESIUM CHELATION WITH COMPARISON OF 21 KNOWN METAL CHELATORS

research data usef for the paper RAPID METHOD FOR SCREENING OF BOTH CALCIUM AND MAGNESIUM CHELATION WITH COMPARISON OF 21 KNOWN METAL CHELATORS in Journal of Biological Inorganic Chemistry

opencc-by-4.0Nov 2024View details →

Data set: Modeling of Magnesium Intercalation into Chevrel Phase Mo6S8: Report on improved cell design.

Dataset of the continuum simulations generated and used within the paper "Modeling of Magnesium Intercalation into Chevrel Phase Mo6S8: Report on improved cell design", published in Batteries & Supercaps  (2023, 6 (5), e202200562, DOI: 10.1002/batt.202200562). A good understanding of the limiting processes in rechargeable magnesium batteries is key to develop novel highcapacity/high-voltage cathode materials. Thereby, the performance of magnesiumion batteries can strongly depend on the morphology of the intercalation cathode. Moreover, high mass loadings are essential for commercialization. In this work the influence of different mass loadings are studied in addition to the impact of the particle size distribution of the active material. Therefore, a detailed continuum model is developed, which is able to describe the complex intercalation of magnesium into a Chevrel phase (CP) cathode. The model considers the thermodynamics, kinetics and interplay of the two energetically different intercalation sites of Mo6S8, which results from its unique crystal structure, as well as the impact of the desolvation on the electrochemical reactions and possible ion agglomeration. Ideal combinations of mass loading and electrolyte concentration as well as the desired CP particle size are determined for the state-of-the-art magnesium tetrakis(hexafluoroisopropyloxy)borate Mg[B(hfip)4]2 electrolyte.

opencc-by-4.0Oct 2021View details →

High-magnesium igneous associations give new insights into geodynamic evolution of the accretionary Central Asian Orogenic Belt

Much controversy exists regarding the evolution and termination of accretionary orogens where typical continent-continent collision features are lacking. The Central Asian Orogenic Belt (CAOB) thus provides a golden opportunity. Precise zircon dating identified two-stage Triassic magmatic events in the southeast CAOB. The Olenekian andesites show typical sanukitoids affinities and yield depleted Hf isotopic compositions and high δ18O values, indicating that they were originated by partial melting of mantle peridotites with input of 20% terrigenous sediments. The Norian diorites have geochemical characteristics comparable with high-Mg adakites. Their depleted isotopic compositions and high Th/Nb and Ba/Nb ratios conform to an origin that melting of delaminated mafic lower crust subsequently interacted with mantle materials. These two-stage abnormal Triassic high-Mg rocks archive hot slab window triggered by break-off  the Paleo-Asian oceanic slab and lower-crustal delamination related to collapse of the southeast CAOB. This study further benefits the reconstruction of East-Asian blocks in Pangea.

opencc-by-4.0Nov 2022View details →

Magnesium isotopic fractionation during serpentinization: Implications for arc and oceanic Mg cycles

Table 1. MgO contents and Sr-Pb-Mg isotopic compositions of the serpentinites from the Mariana forearc mud volcanoes. Table S1. Major and trace elements of the serpentinites from the Mariana forearc mud volcanoes.